The interpretation timeline
Isaiah 40:9 Douay-Rheims

Get thee up upon a high mountain, thou that bringest good tidings to Sion: lift up thy voice with strength, thou that bringest good tidings to Jerusalem: lift it up, fear not. Say to the cities of Juda: Behold your God:

A.D. 386 – 1875 10 witnesses

Patristic

before A.D. 750
386
A.D.
Cyril of Jerusalem Patristic
A.D. 313–386
“For in the power of the Holy Spirit, by the will of the Father and the Son, Peter stood with the Eleven and, lifting up his voice (according to the text, "Lift up your voice with strength, you who bring good tidings to Jerusalem"), captured in the spiritual net of his words about three thousand souls. So great was the grace that worked in all the apostles together, that, out of the Jews … this great number believed, were baptized in the name of Christ and continued steadfast in the apostles' doctrine and in the prayers.”
Source

Scholastic

c. 1100 – 1500
1105
A.D.
Rashi Jewish
1040–1105
“O herald of Zion Heb. מְבַשֶּׂרֶת. The prophets who herald Zion. [This is the feminine form.] Elsewhere (infra 52:7), he says, “the feet of the herald (מְבַשֵּׂר).” [This is the masculine form.] This denotes that if they are worthy, he will be as swift as a male. If they are not worthy, he will be as weak as a female and will delay his steps until the end.”
Source
1167
A.D.
Ibn Ezra Jewish
1089–1167
מבשרת That bringeth good tidings. The feminine is used because עדה the congregation is to be supplied, but not because it signifies a female person.”
1256
A.D.
Thomas Aquinas Catholic
1225–1274
“1 Be comforted, be comforted, and so forth. This is the second principal part of this book, in which he mainly intends the consolation of the people through many promised benefits. It is divided into two parts. In the first he leads them to the expectation of the things promised; in the second he carries out the promise of the divine benefits, below, chapter 45: "Thus says the Lord to my anointed," and so forth. The first is divided into three: in the first he comforts them through the power of the one promising; in the second through his love, chapter 41: "let them keep silence before me," etc.; in the third through the weakness of the idols, which might be believed able to resist, chapter 44: "and now hear, Jacob," and so forth. Concerning the first he does three things. First he leads them to consolation; second he promises a comforter, "the voice of one crying," etc.; in the third he shows the power of God who consoles, "who has measured with the fist," and so forth. Concerning the first, three things. First he leads the people into consolation: "be comforted," in spiritual things, "be comforted," in temporal goods granted. Ecclesiasticus 48: "he comforted," etc., Zechariah 1: "the Lord answered the angel," and so forth. Second he enjoins on the prophets and priests the announcement of consolation: "speak to the heart," namely by consoling; "call," away from sadness, away from idolatry. Hosea 2: "I will lead her into the wilderness." Third he assigns the reason: as to the remission of guilt, "for it is completed," etc., above chapter 27: "and here all the fruit," etc.; as to the ending of punishments, "she has received," etc. — he speaks according to the time after the captivity. Jeremiah 17: "with double destruction," etc. But on the contrary: Nahum 1: "a double tribulation shall not arise." And it must be said that they are called double as to the punishment of body and soul, just as guilt too is in both. "The voice of one crying," and so forth. Here he promises a comforter; and concerning this he does three things. First he sets forth the preparation; second he shows the firmness of the prophecy, "the voice of one saying," etc.; third he foretells the comforter to come, "upon a mountain," and so forth. Concerning the first, three things. First he enjoins the preparation: "the voice of one crying in the wilderness," namely of John the Baptist: this it will be, "prepare," through conversion from evils, "in the wilderness," of vices. Amos 4: "prepare to meet your God," and so forth. Second he foretells the fulfillment, "every valley," following the metaphor of a bad road: if it is mountainous, it causes toil — hence he says, the valley shall be exalted, so that it may be made level with the mountains, and the whole made plain; if it is crooked it causes wandering, and as to this he says, "crooked things shall be," etc.; if it is stony it causes pain to the feet, and as to this: "rough things into ways," by which is signified that faintheartedness will be turned into security, pride into humility, wickedness into uprightness, and cruelty into gentleness. Jeremiah 31: "direct your heart into the way," and so forth. Third he shows the usefulness of the preparation, "and the glory shall be revealed," that is, the Son. Jeremiah 33: "I will heal them," etc.; "shall see" — that is, he will show himself visible to all. Or he speaks of the day of judgment. Apocalypse 1: "every eye shall see him, and they who," and so forth. Some explain it thus. "The voice," of God, "crying," this is it, "prepare in the wilderness," that is, in the land of Judah, once a wasteland, "the way of the Lord," namely for going to the temple, or in the wilderness that is between Babylon and Judah. "Every valley." By these words it is shown that all obstacles are removed, so that the people may return freely. "Glory," in the destruction of the Chaldeans, through which he will appear glorious. "The voice of one saying." In this part he shows the firmness of the prophecy, by comparison to human frailty: hence the Lord first enjoins the cry, which signifies an express and plain announcement. "Cry out." Below, chapter 58: "cry, cease not," etc.; second he enjoins the human frailty that is to be cried out, the prophet asking, "and I said, what shall I cry?" — fearing lest he be commanded to cry out something against his own people, as above chapter 6; and the Lord answering, "all flesh," and so forth. James 1: "for the sun has risen," etc.; third he shows the firmness of the divine word, "surely the grass," etc., Luke 21: "heaven and earth," and so forth. "Upon a high mountain," and so forth. Here he foretells the comforter to come; and concerning this he does three things. First the Lord enjoins upon the prophet the announcement; in the second he sets forth the promise of the coming, "behold, God"; in the third he shows the condition of the one coming, "behold the Lord." Concerning the first he determines who, to whom, and how he is to announce. Who: because it is the one who has the office, "you who bring good tidings." Romans 10: "how shall they preach, unless," and so forth. He designates the manner through three things. Through the height of the place, so that, announcing good things, he may be heard from far off, "upon a mountain," etc. — mystically, Christ, or heavenly conversation and contemplation. Above chapter 2: "come, let us ascend," etc., below chapter 42: "from the top of the mountains," etc.; through the loudness of the voice, "lift it up with strength," so that many may hear, by preaching plainly and steadfastly. Below chapter 58: "cry, cease not," etc.; through the security of the heart, "lift it up, do not," and so forth. Jeremiah 1: "be not afraid before the face," and so forth. To whom it is to be announced he determines as to three things: as to the province of the kingdom, "say to the cities," etc.; as to the metropolis of the province, "you who bring good tidings to Jerusalem"; as to the rulers of the city, "Zion," where the temple and the royal house were. Below chapter 41: "the first shall say to Zion," and so forth. Acts 13: "it was necessary that to you," and so forth. "Behold." Here he sets down the promise of God's coming, "behold," at hand, "your God" — "he will come." Above chapter 35: "God himself will come," and so forth. "Behold the Lord." Here he shows the condition of the one coming; and first he shows that he will come strong to deliver, "in strength." "Arm" — strength on the day of judgment; or in the first coming of Christ, in the power of miracles, or in the destruction of Babylon. Job 40: "if you have an arm like God," and so forth; second, that he will come just to reward, "behold, a reward." "Work before him," because it is in the ease of the will. Wisdom 5: "but the just for ever," etc.; third he shows that he will come merciful, to console, "like a shepherd." To feed the hungry, "he will feed his flock." Ezekiel 34: "in the richest pastures," etc., Jeremiah 3: "I will give you shepherds," etc.; to gather together those who dissent, "in the arm," etc., John 10: "other sheep I have," etc.; to carry the failing, "in his bosom," etc., Luke 15: "when he has found it," and so forth. "Who has measured," and so forth. Here he shows the divine power; and first he establishes it against the errors of the idolaters, who derogated from the divine power by making the creature equal to the Creator. Romans 1: "they served the creature," etc.; second, against the despair of the Jews, who derogated from the divine power by distrust, "lift up on high," and so forth. Concerning the first, two things: first he shows the power of God; second he excludes the error, "to whom then like," and so forth. Concerning the first, three things. First he shows the divine power, together with wisdom, in the easy measuring and creation of all things: for he made all things "in number," as to the multitude of principles; "in measure," as to determination under proper being; "in weight," as to inclination toward an end. Wisdom 11: "with the fist" — that is, easily, as things that are measured with the fist, which is the closed hand; "with the palm" — that is, easily, which is the open hand: "he hung it upon nothing," Job 26, because it is supported by nothing external; otherwise the earth's rest would be violent. "Upon the waters," in Psalm 28, as to position, because it is surrounded by waters. Psalm 103: "upon its own stability," as to its own cause of rest, which is its own nature: "with three fingers" — easily; or by three properties, gravity, dryness, and immobility, "he weighed" — he made them balanced by their own weight. Second he shows the sufficiency of his power, because he needs no helper, "who helped" — against the philosophers who held that, through the mediation of the first things caused, the last things were created; of wisdom, because he needs no counsel, "or who," that he might give him counsel; "with whom," that he might ask of him; "instructed him" — the form of the work; "the path of justice" — of natural justice, which he prefixed to all things, so that no thing might exceed the bounds of its own nature; "knowledge" — concerning the cognition of created things, both universal and particular, against the philosophers; "the way of prudence" — as to the governance of the world. Job 26: "whose helper are you? is it not," and so forth. Third he shows his excellence: because he exceeds the whole multitude of the nations, "behold the nations." "As a drop" — a small drop — "of the bucket," falling from the bucket, which is a water vessel fit for the thirsty, which is reckoned as nothing; "the moment" which is between the arms of the scale, which easily inclines to either side. Job 26: "when scarce a small drop," etc.; he shows also that he exceeds every fitting honor, and especially as to offering. "And Lebanon" — that is, the wood of Lebanon, with which it abounds, because it is wooded, and the animals, with which it abounds, because it is full of pasture. Micah 6: "what worthy thing shall I offer to the Lord," etc.; he shows also that he exceeds every perfection of creatures: both the natural, because their being, with respect to God, is non-being — for Dionysius says, in the book On the Divine Names, chapter 12, that by as much as things participating exceed things not participating, and the participations exceed the things participating, by so much does he who is the principle of the participations exceed both the participations and the things participating. "All nations are as if they were not," etc.; and as to the perfections superadded, which in a certain way are filling — "and as nothing," etc., Jeremiah 4: "I beheld the earth," and so forth. "To whom then," and so forth. Here he excludes the error; and first he derides the error as to the intention of the one working, because they wanted to make God. Therefore, since he is so powerful, "to whom like?" He speaks according to the error of those who thought the very likenesses themselves were gods. "Or what image?" As to those who thought that the things of which they were likenesses — such as the sun or the moon, etc. — Exodus 15: "who is like you among the strong," etc.; and as to the foolish working, because they wanted to induce a most noble form into vile matter, "has the graven image," etc., Wisdom 14: "the incommunicable name," and so forth. Second he convicts the one in error; and first from the natural law dictating, "shall you not know?" — by natural reason, that idols are not gods; and from the written law forbidding, "has it not been declared?" Romans 10: "have they not heard," and so forth. He convicts also from the consideration of creatures: of earthly things, as to creation, "have you not understood the foundations of the earth?" — that they were founded by him; that is, that part of the earth which is near the center. Proverbs 8: "when he weighed out the foundations," etc.; and as to the creator, who "sits upon the circle" — because it is spherical — as one governing; and "the inhabitants" are "as locusts," with respect to the greatness of the earth, or of God himself. From the creation also of the heavenly creatures: "who stretches out" — as to the magnitude of the heaven — "as nothing" — as to the subtlety of its substance — "as a tent" — for himself, as that in which his power first shines forth among bodily things, as to power. Or as for the habitation of the angels and saints, as to dignity; or also of the whole lower creation, as to its brightness. Jeremiah 10: "he prepares the world in wisdom," and so forth. Third he convicts them as to the subjugation of the great, setting forth the destruction of those who are great. Whether according to knowledge, "who gives" — of secrets, namely the philosophers; or according to power, "the judges" — that is, the princes. Psalm 63: "they have failed that search," etc.; and he shows the ease of the destruction through the likeness of grass, or of a tree that does not have firm roots in the earth. "And indeed not even," etc., Job 13: "against a leaf that is carried away by the wind," and so forth. Third he sets down the conclusion, "and to whom have you likened," etc., Psalm 88: "who among the clouds shall be equaled," and so forth. "Lift up," and so forth. Here he establishes the same thing against those who despair; and first he establishes the divine majesty from the creation of things, "who created these," namely the heavenly things. Psalm 32: "he spoke, and they were made," etc.; from the perfection of knowledge, "who brings out," to fulfill his own will, "in number," determined in his own knowledge, "their host" — namely, of the heavens, the stars or the angels — "by name," determining for each its own proper nature, whence it might be named. Psalm 146: "who numbers the multitude," etc.; from the fullness of dominion, "because of the greatness of his might" — for attacking; "of strength" — for resisting; "of power" — for working: "was" — from his lordship. Job 25: "is there any number," and so forth. Second he excludes the error. And first he sets down the error, "why do you say." "Hidden" — he does not see the evils I suffer, otherwise he would defend me. "Judgment" — that is, the power of judging, which he formerly had. Ecclesiasticus 16: "say not, I shall be hidden from God," etc., Ezekiel 9: "they said, he has forsaken," and so forth. Second he sets down the refutation of the error; and first the confirmation of the proof from the law: "do you not know?" — by the natural law; "or have you not heard?" — by the written law — these things that follow. Second he sets down the refutation, first showing the greatness of God from those things which he has in himself, namely, the eternity of dominion, "the everlasting God," etc., Exodus 15: "the Lord has reigned forever," etc.; the unfailing power, "he shall not faint" — so as to be unable to do all things — "nor labor" — so as to be able only with difficulty, Daniel 7: "his power," etc.; the incomprehensibility of knowledge, "nor is there any searching out." Romans 11: "how incomprehensible are," and so forth. Second, through the great things which he does in others: and first in those whom he comforts — their former weakness — "who gives to the weary," as to him who was formerly strong and has failed; and "to those who are not," as to those who were never strong, above chapter 25: "made a strength to the poor," etc., Romans 4: "calls the things that are not," 1 Corinthians 1: "has chosen the things that are weak." Second he shows the greatness of this strength by comparison with natural strength, which he first shows to fail: "the children shall faint" — those who are in the state of growing; "the young men" — who seem robust. 1 Kings 2: "not in his own strength," and so forth. Second, the greatness of the strength given by God: "but they who hope shall change their strength" — namely, natural strength into divine — so that they are not wearied by ascent, "they shall take wings," Proverbs 23: "they shall make themselves wings," etc., nor even by swift running, "they shall run," nor even by continuous walking, "they shall walk," etc., above chapter 5: "there is none that is faint nor labors," etc. (Collationes, chapter 40). The spirit of the Lord is helped (not in creation but in justification — Augustine: "he who created you without you," etc.): through preaching, 1 Corinthians 3: "God's helpers," etc., through preparation, James 4: "draw near to the Lord," etc., through cooperation, Hebrews 12: "watching, lest anyone be lacking," and so forth. The saints are compared to eagles: because of the height of their flight, Job 39: "is it at your command," etc. — in which is the eminence of contemplation, above chapter 33: "the king in his beauty," etc.; because of the keenness of their scent, Luke 16: "wherever the body shall be," etc. — in which is the fervor of love, Song of Songs 1: "draw me after you," etc.; because of the loftiness of their dwelling place, Proverbs 30: "there are three things to me," etc. — in which is the zeal for heavenly conversation, Philippians 3: "our conversation," etc.; because of the swiftness of their movement, Lamentations 4: "they were swifter," etc. — in which is the readiness for good work, Proverbs 22: "you have seen a man," etc.; because of their renewal, Psalm: "it shall be renewed as the eagle's," etc. — in which is the zeal for amendment and progress, 2 Corinthians 4: "although he who is outward," etc.; because of the beauty of their limbs, Ezekiel 17: "a great eagle," etc. — in which is the beauty of the virtues, Song of Songs 4: "you are all fair," etc.; because of their solicitude for their young, Deuteronomy 32: "as an eagle provoking," etc. — in which is the solicitude of the saints, 2 Corinthians 11: "who is weak," and so forth.”

Post-Reformation

c. 1650 – 1900
1714
A.D.
Matthew Henry Reformed
1662–1714
“It was promised (Isa 40:5) that the glory of the Lord shall be revealed; that is it with the hopes of which God's people must be comforted. Now here we are told, I. How it shall be revealed, Isa 40:9. 1. It shall be revealed to Zion and Jerusalem; notice shall be given of it to the remnant that are left in Zion and Jerusalem, the poor of the land, who were vine-dressers and husbandmen; it shall be told them that their brethren shall return to them. This shall be told also to the captives who belonged to Zion and Jerusalem, and retained their affection for them. Zion is said to dwell with the daughter of Babylon (Zac 2:7); and there she receives notice of Cyrus's gracious proclamation; and so the margin reads it, O thou that tellest good tidings to Zion, etc., meaning the persons who were employed in publishing that proclamation; let them do it with a good will, let them make the country ring of it, and let them tell it to the sons of Zion in their own language, saying to them, Behold your God. 2. It shall be published by Zion and Jerusalem (so the text reads it); those that remain there, or that have already returned, when they find the deliverance proceeding towards perfection, let them proclaim it in the most public places, whence they may be best heard by all the cities of Judah; let them proclaim it as loudly as they can: let them lift up their voice with strength, and not be afraid of overstraining themselves; let them not be afraid lest the enemy should hear it and quarrel with them, or lest it should not prove true, or not such good tidings as at first it appeared; let them say to the cities of Judah, and all the inhabitants of the country, Behold your God. When God is going on with the salvation of his people, let them industriously spread the news among their friends, let them tell them that it is God that has done it; whoever were the instruments, God was the author; it is their God, a God in covenant with them, and he does it as theirs, and they will reap the benefit and comfort of it. "Behold him, take notice of his hand in it, and look above second causes; behold, the God you have long looked for has come at last (Isa 25:9): This is our God, we have waited for him." This may refer to the invitation which was sent forth from Jerusalem to the cities of Judah, as soon as they had set up an altar, immediately upon their return out of captivity, to come and join with them in their sacrifices, Ezr 3:2-4. "When the worship of God is set up again, send notice of it to all your brethren, that they may share with you in the comfort of it." But this was to have its full accomplishment in the apostles' public and undaunted preaching of the gospel to all nations, beginning at Jerusalem. The voice crying in the wilderness gave notice that he was coming; but now notice is given that he has come. Behold the Lamb of God; take a full view of your Redeemer. Behold your King, behold your God. II. What that glory is which shall be revealed. "Your God will come, will show himself," 1. "With the power and greatness of a prince (Isa 40:10): He will come with strong hand, too strong to be obstructed, though it may be opposed. His strong hand shall subdue his people to himself, and shall restrain and conquer his and their enemies. He will come who is strong enough to break through all the difficulties that lie in his way." Our Lord Jesus was full of power, a mighty Saviour. Some read, it, He will come against the mighty one, and overpower him, overcome him. Satan is the strong man armed; but our Lord Jesus is stronger than he, and he shall make it to appear that he is so, for, (1.) He shall reign in defiance of all opposition: His arm shall rule, shall overrule for him, for the fulfilling of his counsels, to his own glory; for he is his own end. (2.) He shall recompense to all according to their works, as a righteous Judge: His reward is with him; he brings along with him, as a returning prince, punishments for the rebels and preferments for his loyal subjects. (3.) He shall proceed and accomplish his purpose: His work is before him, that is, he knows perfectly well what he has to do, which way to go about it, and how to compass it. He himself knows what he will do. 2. "With the pity and tenderness of a shepherd," Isa 40:11. God is the Shepherd of Israel (Psa 80:1); Christ is the good Shepherd, Joh 10:11. The same that rules with the strong hand of a prince leads and feeds with the kind hand of a shepherd. (1.) He takes care of all his flock, the little flock: He shall feed his flock like a shepherd. His word is food for his flock to feed on; his ordinances are fields for them to feed in; his ministers are under-shepherds that are appointed to attend them. (2.) He takes particular care of those that most need his care, the lambs that are weak, and cannot help themselves, and are unaccustomed to hardship, and those that are with young, that are therefore heavy, and, if any harm be done them, are in danger of casting their young. He particularly takes care for a succession, that it may not fail or be cut off. The good Shepherd has tender care for children that are towardly and hopeful, for young converts, that are setting out in the way to heaven, for weak believers, and those that are of a sorrowful spirit. These are the lambs of his flock, that shall be sure to want nothing that their case requires. [1.] He will gather them in the arms of his power; his strength shall be made perfect in their weakness, Co2 12:9. He will gather them in when they wander, gather them up when they fall, gather them together when they are dispersed, and gather them home to himself at last; and all this with his own arm, out of which none shall be able to pluck them, Joh 10:28. [2.] He will carry them in the bosom of his love and cherish them there. When they tire or are weary, are sick and faint, when they meet with foul ways, he will carry them on, and take care they are not left behind. [3.] He will gently lead them. By his word he requires no more service, and by his providence he inflicts no more trouble, than he will fit them for; for he considers their frame.”
Source
1771
A.D.
John Gill Reformed
1697–1771
“O Zion, that bringest good tidings,.... Or, "O thou that bringest good tidings to Zion (n)"; which rendering of the words is more agreeable to the latter part of the verse, say unto the cities of Judah, &c. and to some parallel places, Isa 41:27 and to the type, the deliverance of the Jews from Babylon; the tidings of which came from Babylon to Zion, or Jerusalem; and to the Targum which paraphrases the words thus, "O ye prophets, that bring good tidings to Zion;'' and so may be applied to Gospel ministers, who bring the good tidings of the good will, grace, and favour of God, to men, through Christ; of the grace of Christ, in his suretyship engagements and performances; in his incarnation, sufferings, and death, and in his advocacy and intercession; and of the good things that come by him, as peace, pardon, righteousness, salvation, and eternal life: get thee up into the high mountain; to declare these good tidings, in the most open and public manner, that all might hear and receive them, and rejoice at them; it may also point at the place, the church of God, comparable to a high mountain for its visibility and immovableness, where the Gospel is to be published: O Jerusalem, that bringest good tidings: the church of God so called, to whom the faith of the Gospel is delivered, which is the pillar and ground of truth; which receives, retains, and maintains it, and sends forth ministers to proclaim it; particularly the first church at Jerusalem, where it was first preached, and from whence it went forth into other parts of Judea, and into all the world; here the apostles of Christ were, and from hence they set out, and published the Gospel all the world over, and who seem to be chiefly meant; for the words may be rendered, as the other clause, "O thou that bringest good tidings to Jerusalem (o)"; so the Targum: "lift up thy voice with strength"; or preach the Gospel with a strong voice, speak it out; do not mutter it over, or whisper it in a corner; proclaim it on the housetops, cry aloud that all may hear; lift up thy voice like a trumpet; blow the trumpet of the Gospel with all the strength thou hast; cause the joyful sound to be heard far and near: lift it up, and be not afraid; of the reproaches and revilings of men on account of it, or of their persecutions for it; or lest it should not be welcome, or be received as truth: say unto the cities of Judah; the inhabitants of them literally understood, and to the several churches and congregations of the saints everywhere: behold your God! that divine Person is come, that was promised, prophesied of, and expected; even Immanuel, God with us, God in our nature, God manifest in the flesh, God your Saviour, and who being God, truly God, is able to save to the uttermost; look to him with an eye of faith, and be saved; behold the Son of God, the Lamb of God, that has bore your sins, and took them away; behold him now, as your King and your God, on the throne, made and declared, Lord and Christ, crowned with glory and honour, on the same throne with his divine Father, having all power in heaven and earth; and let the echo of your faith be, my Lord and my God. The Targum is, "the kingdom of your God is revealed; see Mat 3:2.'' (n) "O quae evangelizas Tsijoni", Juntas & Tremellius, Piscator. (o) "O quae evangelizas Jeruschalaimo", Junius & Tremellius, Piscator.”
Source
1849
A.D.
1774–1849
“Thou, female. How beautiful are the feet of those who announce good tidings! (Romans x. 15.) (Haydock) — Thus a feminine noun is applied to Solomon, Ecclesiastes i. Prophets make known to all the coming of the Saviour. (Calmet) — Christ preaches from the mountain, and his apostles over the world. (Worthington)”
1863
A.D.
1796–1863
“It is in the feminine singular. Sion is here addressed, and Jerusalem in the next clause.”
1871
A.D.
1871
“Rather, "Oh, thou that bringest good things to Zion; thou that bringest good tidings to Jerusalem." "Thou" is thus the collective personification of the messengers who announce God's gracious purpose to Zion (see on Isa 40:1); Isa 52:7 confirms this [Vulgate and GESENIUS]. If English Version be retained, the sense will be the glad message was first to be proclaimed to Jerusalem, and then from it as the center to all "Judea, Samaria, and the uttermost parts of the earth" (Luk 24:47, Luk 24:49; Act 1:8) [VITRINGA and HENGSTENBERG]. mountain--It was customary for those who were about to promulgate any great thing, to ascend a hill from which they could be seen and heard by all (Jdg 9:7; Mat 5:1). be not afraid--to announce to the exiles that their coming return home is attended with danger in the midst of the Babylonians. The gospel minister must "open his mouth boldly" (Pro 29:25; Eph 6:19). Behold--especially at His second coming (Zac 12:10; Zac 14:5).”
Source
1875
A.D.
Keil & Delitzsch Lutheran
1861–1875
“The prophet accordingly now takes, as his standpoint, the time when Jehovah will already have come. "Upon a high mountain get thee up, O evangelistess Zion; lift up they voice with strength, evangelistess Jerusalem: lift up, be not afraid; say to the cities of Judah, Behold your God." Knobel and others follow the lxx and Targum, and regard Zion and Jerusalem as accusatives of the object, viz., "preacher of salvation (i.e., a chorus of preachers) to Zion-Jerusalem;" but such parallels as Isa 52:7 and Isa 62:11 are misleading here. The words are in apposition (A. S. Th. εὐαγγελιζομένη Σιών). Zion-Jerusalem herself is called an evangelistess: the personification as a female renders this probable at the outset, and it is placed beyond all doubt by the fact, that it is the cities of Judah (the daughters of Zion-Jerusalem) that are to be evangelized. The prophet's standpoint here is in the very midst of the parousia. When Jerusalem shall have her God in the midst of her once more, after He has broken up His home there for so long a time; she is then, as the restored mother-community, to ascend a high mountain, and raising her voice with fearless strength, to bring to her daughters the joyful news of the appearance of their God. The verb bissēr signifies literally to smooth, to unfold, then to make glad, more especially with joyful news. (Note: The verb bissēr signifies primarily to stroke, rub, shave, or scratch the surface of anything; then to stroke off or rub off the surface, or anything which covers it; then, suggested by the idea of "rubbing smooth" (glatt), "to smooth a person" (jemanden gltten; compare the English, to gladden a person), i.e., vultum ejus diducere, to make him friendly and cheerful, or "to look smoothly upon a person," i.e., to show him a friendly face; and also as an intransitive, "to be glad," to be friendly and cheerful; and lastly, in a general sense, aliquid attingere, tractare, attrectare, to grasp or handle a thing (from which comes bâsâr, the flesh, as something tangible or material). In harmony with the Hebrew bissēr (Jer 20:15), they say in Arabic basarahu (or intensive, bassarahu) bi-maulûdin, he has gladdened him with the news of the birth of a son.) It lies at the root of the New Testament εὐαγγελίζειν (evangelize), and is a favourite word of the author of chapters 40-66, that Old Testament evangelist, though it is no disproof of Isaiah's authorship (cf., Nah 2:1). Hitherto Jerusalem has been in despair, bowed down under the weight of the punishment of her sins, and standing in need of consolation. But now that she has Jehovah with her again, she is to lift up her voice with the most joyful confidence, without further anxiety, and to become, according to her true vocation, the messenger of good tidings to all Judaea.”
Source
Modern · 1953 →

The in-app commentary runs from the Fathers to the early-modern record, then stops — that's where the public-domain sources end, not where the reading does. For the modern reading, follow the sources directly.