The interpretation timeline
Isaiah 42:20 Douay-Rheims

Thou that seest many things, wilt thou not observe them? thou that hast ears open, wilt thou not hear?

1105 – 1875 6 witnesses

Scholastic

c. 1100 – 1500
1105
A.D.
Rashi Jewish
1040–1105
“There is much to see There are many sights before you, and you do not observe to look at My deeds and to return to Me. to open the ears I am busy opening your ears through My prophets, but none of you listens to My words. This is a present tense.”
1167
A.D.
Ibn Ezra Jewish
1089–1167
ראות Seeing. It is an irregular form; it is a combination of the two infinitives, the construct (רְאׁת) and the absolute (רׇאׁה). The meaning of the verse is: they will perceive many words of God, but their soul or eye will not retain them ; their ears will be open, they will not be closed, and still, strange to say, they will not hear.”
Source
1256
A.D.
Thomas Aquinas Catholic
1225–1274
“Behold my servant, etc. Here he shows the divine love from the Son whom he promised. John 3: so God loved the world, etc. And first, from so great a benefit, he shows the love of God; second, the perversity of the Jews, "these words I did to them," etc. Concerning the first, three things. First he foretells the coming of the Son of God; second, the fall of the wicked, "the Lord like a strong man," etc. Third, the resurrection of the good, "and I will lead forth the blind," etc., Luke 2: "behold, this one is set," etc. Concerning the first, three things. First he describes the condition of the one being sent; second he foretells the mission, "thus says the Lord," etc.; third he invites to thanksgiving, "sing to the Lord," etc. Concerning the first, three things. First he shows the fullness of grace as regards the grace of union, "I will uphold him." "Servant," according to human nature. Luke 1: "he has upheld Israel," etc.; as regards the grace of headship, "elect," that he might be the head of the Church. "Out of thousands": Canticles 5. Psalm 64: "blessed is he whom you have chosen and taken up," etc., "he was well-pleasing." Matthew 3: "this is my son," etc.; as regards habitual grace, which was singular in him, "I have given my spirit." Above 11: "the spirit of the Lord shall rest upon him," etc. Second he shows the equity of judgment, as regards three things: namely the authority of judging, "judgment to the nations," etc., Psalm 71: "God, your judgment," etc., John 5: "he has given all judgment," etc., to which he joins gentleness, "he will not cry out." Ecclesiastes 9: "the words of the wise are heard," etc.; he shows, second, the equality of the judge: "nor will he accept a person." Acts 10: "God is not a respecter of persons." To which he joins piety in coming to aid: "nor shall his voice be heard outside," Judea, the voice of his preaching, that he might first come to the aid of those to whom he was sent. "I was not sent," etc. Matthew 15, Psalm 94: "today if his voice," etc., and in overlooking, "the reed," namely the kingdom of the Jews, "the flax," the priesthood. Ezekiel 34: "that which was broken," etc.; he shows also, third, the truth of judgment, "in truth," etc., Psalm 95: "he shall judge the world," etc., to which he joins joyfulness: "he shall not be sad," in heart; "troubled," in face: he was always cheerful and joyful, preserving an equality of mind, even though as regards the sensitive part there was a propassion of sadness — not indeed of necessity, but of will. Whence Matthew 26: "my soul is sorrowful," etc., Ecclesiasticus 30: "joy of heart," etc. Third he shows the power of dominion: "until he sets" the last judgment, or his precept, through the apostles preaching; "the law," the Gospel. Genesis 49: "he shall be the expectation," etc., below 60: "for the islands wait for me," etc. Others expound this of Darius, king of the Persians, who was gentle, just, and quiet, whom the Lord chose to free the Jews. "Thus says the Lord God," etc. Here he foretells the mission: and first he shows the power of the sender as regards the creation of heavenly things, "creating the heavens"; as regards the disposition of earthly things, "establishing the earth"; as regards the animation of living things, "giving breath," of natural life, "spirit," gratuitously. Zechariah 12: "the Lord stretching out the heaven," etc. Second he foretells the mission, setting forth the exaltation of the one sent: "I the Lord have called you," my son from eternity, by predestining to the unity of the divine person, "in justice," that is, that I may be just, fulfilling the promises. Romans 1: "who was predestined," etc. "I have taken the hand," as regards operation: John 14: "the Father remaining in me," etc., "and I have kept," lest you be held by death. Psalm 15: "you will not give your holy one," etc., below 49: "I called him and led him," etc.; he also sets forth the enjoining of office: "I have given you as a covenant," as a mediator, as it were. Genesis 9: "I will set my bow," etc. "For a light," etc., as an illuminator, as it were. Above 9: "to those dwelling in the region," etc., John 1: "he was the true light," etc.; he also shows the usefulness of this office against unbelief, "that you might open," etc., John 9: "I have come for judgment," etc., against the servitude of sin. "That you might lead forth," etc., Zechariah 9: "but you, in the blood of the covenant," etc. Third, from the mission, he concludes to the singularity of the divine majesty: as regards power, "I the Lord," etc., Psalm 67: "make a way for him," etc., Exodus 6: "my name Adonai," etc., "glory," by which I am called Lord. Luke 2: "glory in the highest," etc., and as regards knowledge, "the things which were first," etc., below 49: "I told you from then," etc. This too they refer to Darius. "Sing to the Lord," etc. Here he invites to thanksgiving: and first he enjoins praise, and especially upon country-dwellers, either on account of the distance of their dwelling: "from the ends," above 24: "from the ends of the earth, praises," etc., or on account of being enclosed by the sea, "you who go down" — namely sailors — "the fullness of it," namely of the sea, that is, let all that by which it is filled praise God. Psalm 106: "those who go down to the sea," etc., or on account of dwelling in deserts. "Let it lift up," its voice in praise of God, "the desert," that is, its inhabitants, especially as regards the Ishmaelites, "in the houses," after the manner of other nations, who before were wandering through the desert. "Kedar," son of Ishmael. Above 35: "the deserts shall rejoice," etc.; or on account of dwelling in the mountains: "praise, you inhabitants of the rock," of that city in Palestine which is set among the rocks. Or of any mountain whatever. Below 55: "the mountains and the hills shall sing," etc., and he invites those of whom it seems less that they are given to praising God. Second he foretells the spreading abroad of divine praise: "they shall give glory to the Lord," in others, not only in themselves. Below, the last chapter: "I will send from among them those who are saved," etc. Mystically, all this concerns the conversion of the Gentiles to the faith. "The Lord like a strong man." Here he foretells, through the coming of Christ, the future fall: and concerning this he sets down four things. First, power: "the Lord like a strong man," for attacking the Jews through the Romans. Exodus 15: "the Lord like a man of war," etc., "zeal," of vengeance. Proverbs 6: "the zeal and fury of a man," etc. Second he sets down wrath, "he shall cry out," through the tribulations which he will send upon them; against that which was said above, "he will not cry out" — for at first, coming, he showed gentleness. But to those who despise him he shows indignation. Job 37: "he shall thunder with his voice," etc. Third he sets down justice: because it is just that, since he has long waited for the impenitent, he should swallow them all up together at once: "I have kept silent," always, etc., Job 3: "did I not dissemble," etc., "I was patient." Above 30: "therefore the Lord waits," etc., "like a woman in labor," I will bring forth the pain that was dissembled, as a woman brings forth the child conceived. Or: because, like a woman in travail, I will grieve over so grave a punishment. Fourth he sets down the punishment as regards men: "I will make the mountains desolate" — the greater ones; "the hills" — the middling; "the sprout" — the common people. Ezekiel 35: "mount Seir a desert," etc., and as regards the withdrawal of all doctrine or consolation, "I will make the rivers," etc., Psalm 106: "he turned rivers into a desert," etc. This too can be referred to the destruction of the enemies of the Jews through Darius. "And I will lead forth." Here he sets forth (the resurrection) of the good, as regards three things. First, as regards the restoration of act: "I will lead forth the blind," namely the Gentiles, "into the way," Christ, or the precept of the law; or also the Jews, according to another exposition. Proverbs 4: "I will lead you through the paths," etc.; second, as regards the illumination of the intellect: "I will turn darkness," etc., Luke 1: "to give light to those who are in darkness," etc.; third, as regards the direction of the affections. "The crooked things," namely hearts, above 40: "the crooked things shall become straight," etc. "These words I did to them," etc. Here he shows the perversity of the Jews: and first he shows them ungrateful for benefits; second, hard toward the precepts, "hear, you deaf," third, obstinate amid scourges, "who is there among you," etc. Concerning the first, two things. First he shows ingratitude, "these words," namely the aforesaid benefits. "They are turned back," from me, Jeremiah 5: "you have forsaken me," etc. Second he calls down upon them confusion, "let them be confounded," etc., Psalm 118: "let all be confounded," etc. "Hear, you deaf." Here he shows them hard, or disobedient, toward the precepts. And first he shows their hardness, calling them deaf, and blind together. (For their malice blinded them: Wisdom 2), although they have eyes, and ears, of the body — which he proves because those who see keep watch, and those having the ears of the heart open obey. "Sold," into the servant of sin, for the delight of temporal good, 3 Kings 21: "you have been sold to do," etc. "You who have open," etc., Jeremiah 5: "hear, O foolish people," etc., above 6: "blind the heart of this people," etc. Second he shows the folly of the hardened, by this: that in the precepts the Lord intended their benefit. Whence he sets forth the Lord's intention: "and the Lord willed him," the people; and that the people itself might magnify the law of God, by keeping it in their heart; and that the Lord might extol, that is, exalt, the people. 1 Thessalonians 4: "this is the will of God," etc.; and he also shows their contradiction, because they sinned in themselves: "but he himself, plundered," by demons through various sins, and therefore "laid waste," by enemies — above 18: "from a people torn apart," etc.; they also offered others an occasion of sinning, "a snare," that is, an occasion for sinning, "of the young," of the foolish. Hosea 5: "you have become a snare," etc., and because they hid their sins, "in houses of prison," that is, in the secret place of the heart. "With heart and heart," etc. Third he sets down the punishment: "they have become for a prey," etc. "Nor is there one to deliver," by the power of wars; "nor is there one to say," by the urgency of prayer. Ecclesiasticus, the last chapter: "they surrounded me on every side," etc.; or there the punishment begins, "in houses of prison," so that it be expounded according to the letter. "Who is there among you." Here he shows them incorrigible through scourges, because they do not even recognize the cause of the scourges: and concerning this he does three things. First he inquires after one who thinks rightly, hinting at their fewness. "The things to come," which I foretell concerning your punishments. Hosea, the last chapter: "who is wise," etc. Second he determines the truth as regards the author of the punishment: "who gave," etc., 1 Kings 2: "the Lord puts to death," etc.; as regards the fault: "he it is against whom," etc., Baruch 4. "They did not know his justices," etc.; and as regards the punishment, "and he poured out," etc., Psalm 68: "pour out your wrath upon them," etc. — "pouring out" signifies abundance. Third he excludes the recognition of the truth: "and it burned him," namely with material fire through the devastation of enemies; "he did not know," that he was punished by God for his sins. Psalm 81: "they did not know nor understand," etc. (Collationes, chapter 42.) "Cry" — of devout prayer, Hebrews 5: "with a strong cry," etc.; of attentive preaching, John 7: "on the last day of the feast," etc.; of strife and contention, above 5: "he waited that it should do," etc. Christ is given "for a covenant" of preserving salvation, Genesis 9: "my bow," etc., of fulfilling promise, II Corinthians 1: "as many as are the promises," etc., of divine love, John 3: "so God loved," etc., of the law that is to cease, Psalm: "holocausts for sin," etc.”

Post-Reformation

c. 1650 – 1900
1771
A.D.
John Gill Reformed
1697–1771
“The Lord is well pleased for his righteousness sake,.... This may be either understood of what the Lord had done for these people in time past, and which is mentioned as an aggravation of their stupidity, disobedience, and ingratitude; he had delighted in them, and chose them above all people upon the earth, and distinguished them with his favours, which he did for the sake of his own righteousness or faithfulness to his promises made to their fathers: he magnified them with the law, and made them honourable (a); gave them a law which made them great and honourable in the esteem of others; see Deu 10:15 or it may be interpreted of what the Lord would do hereafter, either in a way of grace and favour; that though they were now so ignorant and disobedient, yet in the times of salvation, in the days of the Messiah, these blind shall see, and deaf shall hear, not for their sakes, but for his righteousness sake; when he will magnify his law and make it honourable, and the earth shall be filled with the knowledge of him; this way go the Jewish commentators: or rather in a way of judgment, that the Lord would be well pleased in glorifying his justice or righteousness, in the rejection of such a blind and stupid people, who refused to receive the Messiah, against so much light and evidence; and would "magnify the law", and support the authority of it, and "make it honourable", by punishing the transgressors of it; but I am inclined to think that this has respect to a remnant among these people, according to the election of grace; or to the Lord's people in common, whether Jews or Gentiles, with whom he "is well pleased", or in whom he delights. The Lord is well pleased with his Son, and with him as his servant, as Mediator, for his righteousness sake, as in Isa 42:1 to which there may be some respect; and he is well pleased with all his people as considered in him; the love he bears to them, is a love of complacency and delight: the choice he has made of them; the things he has laid up for them; the care of their persons in Christ, and salvation by him; the marrying of them to him, and the taking them into his family, show how well pleased he is with them: he delights in them, as they are regenerated and sanctified by his Spirit; the exercise of their graces, and the performance of their duties and services, are acceptable to him through Christ; his presence with them, the fellowship with himself he grants unto them, the account he makes of them as his jewels, fully demonstrate his well pleasedness in them: but this is not on their own account; for they are polluted and loathsome creatures in themselves, guilty of sin, deserving of wrath; and not for any righteousness of their own, which is imperfect, filthy, and not answerable to the law; which, instead of being made honourable, is dishonoured by it; there is no justification by it, and no acceptance with God through it; but for the sake of the righteousness of Christ, which is perfect, pure, and spotless; which justifies from all sin, and makes comely and beautiful, and glorifies the justice of God, as well as his righteous law, as follows: he will magnify the law, and make it honourable: that is he for whose righteousness sake God is well pleased: the law of God is great and honourable in itself, from the author, matter, and usefulness of it; and it becomes more so by Christ the Son of God being made under it; by his perfect obedience to it, and by his bearing the penalty of it, in the room and stead of his people; and by holding it forth in his hands, as a rule of walk and conversation to them; by all which it receives more honour and glory than by all the obedience of creatures to it, angels or men, though ever so perfect. (a) "magnificabat (eum) doctrina et reddebat magnificum", Junius & Tremellius, Piscator; "magnificum illum ficit lege et condecoravit", Vitringa.”
Source
1871
A.D.
1871
“observest--Thou dost not keep them. The "many things" are the many proofs which all along from the first God had given Israel of His goodness and His power (Deu 4:32-38; Deu 29:2-4; Psa. 78:1-72; Psa. 105:1-45). he--transition from the second to the third person. "Opening . . . ears," that is, though he (Israel) hath his ears open (see on Isa 6:10). This language, too (see on Isa 42:19), applies to Messiah as Jehovah's servant (Isa 50:5; Psa 40:6).”
Source
1875
A.D.
Keil & Delitzsch Lutheran
1861–1875
“The reproof, which affects Israel a potiori, now proceeds still further, as follows. "Thou hast seen much, and yet keepest not; opening the ears, he yet doth not hear. Jehovah was pleased for His righteousness' sake: He gave a thorah great and glorious. And yet it is a people robbed and plundered; fastened in holes all of them, and they are hidden in prison-houses: they have become booty, without deliverers; a spoil, without any one saying, Give it up again!" In Isa 42:20 "thou" and "he" alternate, like "they" and "ye" in Isa 1:29, and "I" and "he" in Isa 14:30. ראית, which points back to the past, is to be preserved. The reading of the keri is ראות (inf. abs. like שׁתות, Isa 22:13, and ערות, Hab 3:13), which makes the two half-verses uniform. Israel has had many and great things to see, but without keeping the admonitions they contained; opening its ears, namely to the earnestness of the preaching, it hears, and yet does not hear, i.e., it only hears outwardly, but without taking it into itself. Isa 42:21 shows us to what Isa 42:20 chiefly refers. חפץ is followed here by the future instead of by Lamed with an infinitive, just as in Isa 53:10 it is followed by the perfect (Ges. 142, 3, b). Jehovah was pleased for His righteousness' sake (which is mentioned here, not as that which recompenses for works of the law, but as that which bestows mercy according to His purpose, His promise, and the plan of salvation) to make thorâh, i.e., the direction, instruction, revelation which He gave to His people, great and glorious. The reference is primarily and chiefly to the Sinaitic law, and the verbs relate not to the solemnity of the promulgation, but to the riches and exalted character of the contents. But what a glaring contrast did the existing condition of Israel present to these manifestations and purposes of mercy on the part of its God! The intervening thought expressed by Hosea (Hos 8:12), viz., that this condition was the punishment of unfaithfulness, may easily be supplied. The inf. abs. הפח is introduced to give life to the picture, as in Isa 22:13. Hahn renders it, "They pant (hiphil of puuach) in the holes all of them," but kullâm (all of them) must be the accusative of the object; so that the true meaning is, "They have fastened (hiphil of pâchach) all of them," etc. (Ges. 131, 4, b). Schegg adopts the rendering, "All his youths fall into traps," which is wrong in two respects; for bachūrı̄m is the plural of chūr (Isa 11:8), and it is parallel to the double plural כלאים בּתּי, houses of custodies. The whole nation in all its members is, as it were, put into bonds, and confined in prisons of all kinds (an allegorizing picture of the homelessness and servitude of exile), without any one thinking of demanding it back (השׁב = השׁב, as in Eze 21:32; a pausal form here: vid., Ges. 29, 4 Anm.).”
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.