The interpretation timeline
Isaiah 66:21 Douay-Rheims

And I will take of them to be priests, and Levites, saith the Lord.

1105 – 1875 7 witnesses

Scholastic

c. 1100 – 1500
1105
A.D.
Rashi Jewish
1040–1105
“And from them too From the peoples bringing them and from those brought, I will take priests and Levites, for they are now assimilated among the heathens (nations [Mss. and K’li Paz]) under coercion, and before Me the priests and the Levites among them are revealed, and I will select them from among them, and they shall minister before Me, said the Lord. Now where did He say it? (Deut. 29:28) “The hidden things are for the Lord our God.” In this manner it is explained in the Aggadah of Psalms (87:6).”
Source
1167
A.D.
Ibn Ezra Jewish
1089–1167
“Also of them whom they will bring, I shall take some to be priests and Levites before me.”
1256
A.D.
Thomas Aquinas Catholic
1225–1274
“Thus says the Lord. Here he determines the manner of the execution of the sentence already given: and first specifically as regards the Jews; second universally as regards all: but I, their works and thoughts. The first is divided into two: in the first he excludes false confidence; second he sets forth and determines the sentence given, as to the manner of its execution: Hear the word of the Lord. Concerning the first there are two parts. First he excludes false confidence in the holiness of the temple, showing that the temple is not the place of God: both from the greatness of God, who fills all things — whose seat heaven is called, because it shares abundantly in his goodness, just as a seat holds the greater part of the one sitting; while earth is his footstool, because the earth shares least in his goodness, just as the outermost part reaches only to the footstool — or by heaven the saints are meant, and by earth the earthly-minded. 3 Kings 8: if heaven and the heaven of heavens do not contain you. Jeremiah 23: I fill heaven and earth. Acts 17: not in the hand-made things of the temple. Then from rest: because each thing rests in the place that is its own place; but God does not rest in anything, rather all things rest in him, as made by him. And what is his place? Above, ch. 40: lift up on high. And he gives a useful remedy: but to whom — the poor one, that is, the humble man who considers himself small as to the present; the contrite, as to past sins; the trembling, as to his resolve concerning what is to be done in the future. Ecclesiasticus 15: his eyes are upon those who fear him. Second, he excludes the confidence they had conceived from the rite of sacrifices: and first he sets down their reprobation: he who sacrifices an ox — as if he were to say: their sacrifices are so abominable, as if they were doing something against the law, because they were offering the same things to idols. He who blesses — that is, praises and venerates. Above, ch. 1: do not offer sacrifice any more. Second, he shows the reason for the reprobation, first setting down their fault: they have chosen all these things — namely, the sacrifices — walking in their own ways, evil ones. Proverbs 2: they rejoice when they have done evil, and exult in the worst of things. Second, he threatens punishment: hence, and I — Proverbs 3: he himself will mock the mockers. Job 3: the fear that I feared has come upon me, and what I dreaded has happened to me. Third, he charges the sinners with hardness of heart: because I called — Proverbs 1: I called, and you refused. Hear the word of the Lord. Here he carries out the manner of executing the sentence already given: and first as to the rewards of the good; second as to the punishments of the wicked: and it shall be known. The first is in two parts. First he rouses attention: you who tremble, out of reverence for his words. Ecclesiasticus 2: you who fear the Lord, believe in him. Second, he pursues the promise: and first as to vengeance upon the mockers, setting down their mockery: your brothers have said. Let him be glorified — as if to say: let the glory of the Lord appear, which you expect — as if to say: it will never appear. Above, ch. 5: he will come quickly and swiftly, he will not fail nor grow weary in it. And foretelling their confusion: but they shall be confounded, in this way: a voice of the people, fearing; a voice of the Lord, as to the tumult of enemies. Zephaniah 1: the voice of the day of the Lord is bitter. Second, he carries out the promise as to the abundance of good things: and first as to the reuniting of the people, setting down the promise: before she was in labor — that is, suddenly, and at once, the children of Jerusalem shall be gathered to her, just as if a woman should suddenly bring forth a son, with no labor going before. Above, ch. 37: the children have come as far as the birth. Mystically it is expounded of the childbearing of the Blessed Virgin, and of the childbearing of the Church in the conversion of the faithful, and of the bringing-forth of the eternal generation. And he introduces a question of wonder: who has ever heard such things? Above, ch. 49: who has begotten for me? And he sets down the answer in the person of the Lord: shall not I myself bring forth? — gathering the Jews, or converting the faithful, or the Son from eternity. Similarly, Psalm 93: he who planted the ear, shall he not hear? Or he who formed the eye, does he not consider? And these arguments hold, if that which is of perfection in creatures is attributed to him, with everything that belongs to imperfection removed. Second, he promises immense consolation to those gathered. And first he invites others to rejoice with them: rejoice with Jerusalem — in her, as in the object of joy — setting down the condition of those who rejoice together, as to affection: you who love. Canticle of Canticles 5: eat, O friends, and drink, and be inebriated, dearest ones. As to the sign of affection: you who mourn. Matthew 5: blessed are they who mourn, for they shall be comforted. And the fruit of that shared rejoicing, as to the sharing of gladness, or of peace: that you may suck — Canticle of Canticles 1: your breasts are better than wine. As to the sharing of glory: that you may milk it out, as those who milk out milk. Job 22: then you shall abound in delights over the Almighty. Second, he promises a copious bestowal of peace: for thus says the Lord: I will turn — so that it may be called an overflow, like a river which, though it comes down with great force, does not overflow. And of glory, and as it were a torrent. Above, ch. 48: it would have been made like a river. Third, he promises the full reception of consolation. First as to the administering of the nations: which you shall suck — unto the glory of the nations, because the kings of the nations themselves shall comfort you, and shall sustain you. Hence there follows, at the breasts. Mystically he speaks of the apostles, who rejoiced in the glory of the nations swiftly converted, and carried them, as it were, to the breasts by gentle admonitions. Above, ch. 60: you shall suck milk. Second, as to the divine protection: as if to someone, a mother. Hebrews 12: you have forgotten the consolation. Third, as to the enjoyment of good things: you shall see — the good things given you by God; your bones — you who in adversity were like dry bones. Ezekiel 37: dry bones, hear the word of the Lord. Or, you shall see the divine essence. Ecclesiastes 11: light is sweet, and it is delightful for the eyes to see the sun. Bones, unto the resurrection. And it shall be known. Here he promises punishments to the wicked: and first he threatens punishment, setting down the indignation of the judge: the hand, afflicting the wicked among his servants. Or, the hand of consolation, among his servants, through its effect. Above, ch. 27: there is no indignation in me. He also sets down the greatness of the punishment: for behold, the Lord — in fire, by which the city was to be burned, or by which the world was to be purged. Chariots — the army of the Chaldeans, in which God comes, as it were; or the Angels who will come with him to judgment. Psalm 96: fire shall go before him. Amos 9: they shall perish by the sword of God. He also sets down the multitude of those punished: they shall be multiplied. Above, ch. 34: for the victim of the Lord is in Bosra, and a great slaughter in the land of Edom. Second, he reproaches their guilt: who were sanctifying themselves, thinking to cleanse themselves from uncleanness by waters, or even by the sacrifices of idols, in the gardens, in which they worshipped idols, or gave themselves over to pleasure, after one, coupling with women after the manner of beasts. Or, behind the door — literally, the mouse, the dormouse, against the law, Leviticus 11. Above, ch. 65: they eat swine's flesh, and unclean broth. But I. Here he pursues the manner of the discernment as regards all in common: and first he proclaims the universal judgment: their works and thoughts — judging, as it were, for both together; I come, on the day of judgment. Or, the various kingdoms of your enemies, and destroying the wicked among you. They shall come, to Jerusalem after your return, or to judgment, or to the faith. Joel 3: behold, I will raise them up out of the place in which you sold them. Second, he sets down the summons: and I will set among them — that is, among the Jews who shall be with Zerubbabel and the other leaders — a sign, the edict of Cyrus, to the nations, to which the Jews had been scattered; to Lydia, those who hold the arrow, because they are good archers; my glory, which shall appear in your deliverance. Above, ch. 11: he shall lift up a sign among the nations. Or, he sets the sign of the cross among the apostles, that all may be turned to God, as it were preparing them for judgment. Third, he sets down the preparation of those who are to be judged: and first as to the good; second as to the wicked: and they shall go forth, and shall see. The first is in two parts. First, as to the Jews, setting down their honorable return: they shall bring them on horses — by which are signified the aids which those returning had from the Gentiles. Baruch 5: the Lord shall bring these to you. Or there are signified the various conditions of those who are converted to the faith, as the Gloss expounds. Second, the exaltation of their return, first as to dignity: and I will take — which was fulfilled literally in the Jews, and also in the apostles. Above, ch. 61: you shall be called the priests of the Lord; it shall be said of you, ministers of our God. Second, as to the preservation of their offspring: for as the new heavens, as above, ch. 65 — so shall it stand, forever. Jeremiah 31: if these laws shall fail before me, says the Lord, then the seed of Israel also shall fail. Or, the saints shall stand forever, renewed like heaven and earth. Third, as to the duration of their glory: and it shall be month — as though month shall succeed month, and feast shall succeed feast, in your prosperity. Above, ch. 29: year has been added to year, and the solemnities have run their course. Mystically, the Church after the end; spiritual rest after carnal. Second, as to the Gentiles: and all shall come — because from the various nations they came to Jerusalem to worship the Lord. Psalm 85: all the nations shall come and shall adore before you, O Lord. Or, on the day of judgment: and they shall go forth. Here he sets down the second judgment, as regards the wicked: and first the outflow of the punishment: and they shall go forth, coming to Jerusalem, and they shall see, in the ancient tombs, and in the fields, the bones of their dead fathers. Above, ch. 34: their slain shall be cast out, and from their carcasses a stench shall rise. Or, the saints shall see the damned falling into damnation. Second, he sets down the duration of the punishment: their worm — of conscience, by which even the dead shall be tormented; and fire — of hell. Judith 16: he will give fire and worms into their flesh. Third, the delight taken in these punishments, as regards those who see them: and they shall be unto satiety to all flesh — that is, to the saints. Psalm 57: the just shall rejoice when he shall see the revenge. From these punishments may he free us, who has granted both to begin and to complete. And thus ends the sentence and the literal exposition on Isaiah according to Brother Thomas Aquinas, which Brother Iacobinus of Asti, of the province of Lombardy, at that time a student in the general house of studies at Naples, transcribed into legible letters, completing the authorities. He also arranged collations at certain places upon each of the lectures, and this he did for the benefit of the friars of our order, and that copies of the said writings might be had. Therefore, praise be to him who granted both to begin and to complete. Amen.”

Post-Reformation

c. 1650 – 1900
1771
A.D.
John Gill Reformed
1697–1771
“And I will also take of them for priests,.... That is, of the Gentiles, the brethren brought as an offering to the Lord; and therefore must respect Gospel times, when the Aaronic priesthood would be changed and cease, which admitted not of Gentiles, nor any of any other tribe in Israel, but the tribe of Levi; nor is this to be understood of the spiritual priesthood common to all believers, Pe1 2:5 since of those converted Gentiles brought, not all, but only some of them, would be taken for priests; and therefore can only be interpreted of the ministers of the word, who, in Old Testament language, are called priests, though never in the New Testament; but elders, bishops, overseers, pastors, and teachers. The first preachers of the Gospel were Jews, as the twelve apostles, the seventy disciples, Paul and Barnabas, and others; but when the Gospel was preached, and churches planted in the Gentile world, then priests, or pastors, or elders, were taken out from among them, and ordained over the churches everywhere; and which have continued, more or less, ever since; and will be more abundant in the latter day; whose work and office is not to offer up slain beasts, as the priests of old; but to point to the sacrifice of Christ, to the Lamb of God, that takes away the sins of men; and to teach the knowledge of crucified Christ, and the several doctrines and duties of the Christian religion, as the priests formerly taught the knowledge of the law, Mal 2:7, and for Levites, saith the Lord; this still more clearly shows that the prophecy belongs to the Gospel dispensation, and is to be understood figuratively and spiritually; for none but those of the tribe of Levi could be taken for Levites in a literal sense; but here Gentiles are said to be taken for such, and design men in Gospel churches. The Levites, as their name signifies, were such as were "joined" to others; they ministered to the priests, and assisted them, and had the charge of the temple, and the vessels of it, to whom deacons now answer; who are helps and assistants to the ministers of the word: their business is to serve tables, and to take care of the secular affairs of the church; so that this is a prophecy of the churches in the latter day being truly organized, and filled with proper officers, as well as with numerous members.”
Source
1849
A.D.
1774–1849
“Of them, Gentiles; (ver. 19.) some of whom alone will be properly priests, though all enjoy the title in a figurative sense, 1 Peter ii. 9. The Jews strive in vain to elude this text. (Calmet) — Under the law, one family alone enjoyed this honour: but Christ chooses the most deserving pastors. (Worthington)”
1871
A.D.
1871
“of them--the Gentiles. priests . . . Levites--for spiritual worship: enjoying the direct access to God which was formerly enjoyed by the ministers of the temple alone (Pe1 2:9; Rev 1:6).”
1875
A.D.
Keil & Delitzsch Lutheran
1861–1875
“The latter, having been incorporated into the priestly congregation of Jehovah (Isa 61:6), are not even excluded from the priestly and Levitical service of the sanctuary. "And I will also add some of them to the priests, to the Levites, saith Jehovah." Hitzig and Knobel suppose mēhem to refer to the Israelites thus brought home. But in this case something would be promised, which needed no promise at all, since the right of the native cohen and Levites to take part in the priesthood and temple service was by no means neutralized by their sojourn in a foreign land. And even if the meaning were that Jehovah would take those who were brought home for priests and Levites, without regard to their Aaronic or priestly descent, or (as Jewish commentators explain it) without regard to the apostasy, of which through weakness they had made themselves guilty among the heathen; this ought to be expressly stated. But as there is nothing said about any such disregard of priestly descent or apostasy, and what is here promised must be something extraordinary, and not self-evident, meehem must refer to the converted heathen, by whom the Israelites had been brought home. Many Jewish commentators even are unable to throw off the impression thus made by the expression mēhem (of them); but they attempt to get rid of the apparent discrepancy between this statement and the Mosaic law, by understanding by the Gentiles those who had been originally Israelites of Levitical and Aaronic descent, and whom Jehovah would single out again. David Friedlnder and David Ottensosser interpret it quite correctly thus: "Mēhem, i.e., of those heathen who bring them home, will He take for priests and Levites, for all will be saints of Jehovah; and therefore He has just compared them to a clean vessel, and the Israelites offered by their hand to a minchâh." The majority of commentators do not even ask the question, in what sense the prophet uses lakkōhănı̄m lalevayyim (to the priests, to the Levites) with the article. Joseph Kimchi, however, explains it thus: "הכהנים לצורך, to the service of the priests, the Levites, so that they (the converted heathen) take the place of the Gibeonites (cf., Zac 14:21), and therefore of the former Cananaean nethı̄nı̄m" (see Khler, Nach-exil. Proph. iii. p. 39). But so interpreted, the substance of the promise falls behind the expectation aroused by מהם וגם. Hofmann has adopted a more correct explanation, viz.: "God rewards them for this offering, by taking priests to Himself out of the number of the offering priests, who are added as such to the Levitical priests." Apart, however, from the fact that ללוים לכהנים cannot well signify "for Levitical priests" according to the Deuteronomic הכהנים, since this would require הלוים לכהנים (inasmuch as such permutative and more precisely defining expressions as Gen 19:9; Jos 8:24 cannot be brought into comparison); the idea "in addition to the priests, to the Levites," is really implied in the expression (cf., Isa 56:8), as they would say לאשּׁה לקח and not לאשׁה, and would only use לנּשׁים לקח in the sense of adding to those already there. The article presupposes the existence of priests, Levites (asyndeton, as in Isa 38:14; Isa 41:29; Isa 66:5), to whom Jehovah adds some taken from the heathen. When the heathen shall be converted, and Israel brought back, the temple service will demand a more numerous priesthood and Levitehood than ever before; and Jehovah will then increase the number of those already existing, not only from the מובאים, but from the מביאים also. The very same spirit, which broke through all the restraints of the law in Isa 56:1-12, is to be seen at work here as well. Those who suppose mēhem to refer to the Israelites are wrong in saying that there is no other way, in which the connection with Isa 66:22 can be made intelligible. Friedlnder had a certain feeling of what was right, when he took Isa 66:21 to be a parenthesis and connected Isa 66:22 with Isa 66:20. There is no necessity for any parenthesis, however. The reason which follows, relates to the whole of the previous promise, including Isa 66:21; the election of Israel, as Hofmann observes, being equally confirmed by the fact that the heathen exert themselves to bring back the diaspora of Israel to their sacred home, and also by the fact that the highest reward granted to them is, that some of them are permitted to take part in the priestly and Levitical service of the sanctuary.”
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.