The interpretation timeline
Romans 2:13 Douay-Rheims

For not the hearers of the law are just before God, but the doers of the law shall be justified.

A.D. 220 – 1871 8 witnesses 9 excerpts

Patristic

before A.D. 750
220
A.D.
Tertullian Patristic
c. A.D. 150–220
“For each individual lives by his own faith, nor is there exception of persons with God; since it is not hearers of the law who are justified by the Lord, but doers, according to what the apostle withal says. Therefore, if you have the right of a priest in your own person, in cases of necessity, it behoves you to have likewise the discipline of a priest whenever it may be necessary to have the fight of a priest.”
Source
258
A.D.
Cyprian Patristic
c. A.D. 200–258
“That we must labour not with words, but with deeds. In Solomon, in Ecclesiasticus: "Be not hasty in thy tongue, and in thy deeds useless and remiss." And Paul, in the first to the Corinthians: "The kingdom of God is not in word, but in power." Also to the Romans: "Not the hearers of the law are righteous before God, but the doers of the law shall be justified." Also in the Gospel according to Matthew: "He who shall do and teach so, shall be called greatest in the kingdom of heaven." Also in the same place: "Every one who heareth my words, and doeth them, I will liken him to a wise man who built his house upon a rock. The rain descended, the floods came, the winds blew, and beat upon that house, and it fell not: for it was founded upon a rock. And every one who heareth my words, and doeth them not, I will liken him to the foolish man, who built his house upon the sand. The rain descended, the floods came, the winds blew, and beat upon that house; and it fell: and its ruin became great."”
Source
407
A.D.
John Chrysostom Patristic
A.D. 347–407
“What benefit is it if, while listening each day, we neglect to practice what we hear? Hence I beseech you, let us be zealous in practicing those very deeds (by no other way, in fact, is it possible to be saved) so that we may also wash away our sins and be granted the Lord's lovingkindness at his own hands, thanks to the grace and mercy of our Lord Jesus Christ.”
Source
“"For not the hearers of the law are just before God." Well doth he add "before God;" for haply before men they may be able to appear dignified and to vaunt great things, but before God it is quite otherwise-the doers of the Law alone are justified. You see with what advantage he combats, by turning what they said to an opposite bearing. For if it is by the Law you claim to be saved, in this respect, saith he, the Gentile will stand before you, when seen to be a doer of what is written in the Law. And how is it possible (one may say) for one who hath not heard to be a doer? Not this only, he says, is possible, but what is much more even than this. For not only is it possible without hearing to be a doer, but even with hearing not to be so. Which last thing he makes plainer, and that with a greater advantage over them, when he says, "Thou that teachest another, teachest thou not thyself?" (Rom. ii. 21.) But here he is still making the former point good.”
Source
523
A.D.
c. A.D. 450–523
“For the man who, though listening not, doeth, is better than the man who is constant in listening and empty of works, even as the word of the apostle Paul teacheth us, "For not the hearers of the law are righteous before God, but the doers of the law shall be justified: for if the Gentiles which have no law do by their own nature the things of the law, these, having no law, are a law unto themselves; and they show the work of the law written upon their hearts, and their conscience testifieth concerning them". The hearing of the law is good, for it bringeth to the works thereof, and reading and meditation in the Scriptures, which purify our secret understanding from thoughts of evil things, are good, but if a man is constant in reading, and in hearing, and in the meditation of the word of God, and yet perfecteth not by his reading the labour of works, against this man hath the Spirit of God spoken by the hand of the blessed David, rebuking and reproving his wickedness.”
Source

Scholastic

c. 1100 – 1500
1273
A.D.
Thomas Aquinas Catholic
1225–1274
“After the Apostle has confuted human judgment, by which the gentiles and the Jews mutually judged one another, and has commended the divine judgment, here he proceeds to show that those things in which the Jews gloried do not suffice for salvation; and first he shows his proposition, second he resolves the things that could be said to the contrary, in chapter 3, at the words "What then is the advantage," and so on. The Jews gloried in two things, namely the law and circumcision, which was not from the law of Moses but from the fathers, as is said in John 7:22. First, therefore, he shows that the law heard or received did not suffice for salvation. Second, he shows the same concerning circumcision, at the words "Circumcision indeed," and so on. Concerning the first he does two things. First he proposes what he intends, second he manifests his proposition, at the words "For when the gentiles." Concerning the first he proposes two things, one by excluding, the other by asserting. For he excludes what the Jews supposed, namely that they were justified by the mere hearing of the law. Hence he says: thus it has been said, "they that have sinned in the law shall be judged by the law; for not the hearers of the law," by the very fact that they hear the law, "are just before God," even if they are reputed just before men. Matthew 7:26: "He that heareth my words and doth them not, shall be like a foolish man." James 1:23: "If any be a hearer of the word, and not a doer," and so on. Second, he affirms that the doers of the law are just, when he says "but the doers of the law shall be justified." Matthew 7:24: "Every one therefore that heareth my words and doth them shall be likened to a man," and so on. James 1:22: "Be ye doers of the word, and not hearers only," and Psalm 110:10: "A good understanding to all that do it." But concerning this second point there seems to be a difficulty, since below, at 3:20, it is said: "By the works of the law no flesh shall be justified before him." Therefore no one is justified by the fact that they do the works of the law. But it must be said that "to be justified" can be taken in three ways. In one way it can be taken as to reputation, so that someone is then said to be justified when he is reputed just. Ezekiel 16:51: "Thou hast justified thy sisters," namely by reputation. And according to this, "the doers of the law shall be justified" can be understood, that is, they shall be reputed just before God and men. Second, by the execution of justice, inasmuch as they carry out works of justice. Luke 18:14: "This man went down into his house justified," namely because he had done the public work of justice by confessing his sin. And in this way is verified what is here said, "the doers of the law shall be justified," namely by carrying out the justice of the law. Third, justification can be taken as to the cause of justice, so that he is said to be justified who newly receives justice, as below, 5:1: "Being justified therefore by faith," and so on. But it is not understood here in this sense, that the doers of the law are justified as though they acquired justice through the works of the law. For this indeed cannot be, neither as to the ceremonial works, which did not confer justifying grace, nor even as to the moral works, from which the habit of justice is not acquired, but rather it is through the infused habit of justice that we do works of this kind. Then, when he says "For when the gentiles," he manifests his proposition. And first he shows that the doers of the law, even if they are not hearers, are justified; second, that the hearers of the law without observance of the law are not justified, at the words "But if thou art called a Jew." Concerning the first he does three things. First he sets forth the dignity of those who observe the law without having heard it; second he manifests what he had said, at the words "who show the work of the law"; third he proves it, at the words "their conscience bearing witness to them." Concerning the first he touches three things as regards the gentiles. First, their lack of the law, saying "for when the gentiles who have not the law," namely the divine law, which they have not received. For the law was not given to the gentiles, but to the Jews, according to Ecclesiasticus 24:33: "Moses commanded a law in the precepts of justices, and an inheritance to the house of Jacob, and the promises to Israel." And Psalm 147:20: "He hath not done in like manner to every nation." Deuteronomy 33:4: "Moses commanded us a law, the inheritance of the multitude of Jacob." From which it is clear that the gentiles did not sin by not observing the ceremonial precepts of the law. Second, he commends in them the observance of the law, when he says "do by nature those things that are of the law," that is, the things which the law commands, namely as to the moral precepts, which pertain to the dictate of natural reason, just as it is also said of Job that he was just and upright and fearing God and withdrawing from evil. Hence he himself says: "My foot hath followed his steps, I have kept his ways." But what he says, "by nature," presents a difficulty. For it seems to lend support to the Pelagians, who said that man could keep all the precepts of the law by his own natural powers. Hence "by nature" must be expounded as meaning through nature reformed by grace. For he is speaking of gentiles converted to the faith, who by the help of the grace of Christ had begun to keep the moral precepts of the law. Or "by nature" can be said to mean through the natural law showing them what is to be done, according to Psalm 4:7: "Many say: who sheweth us good things? The light... is signed," etc., which is the light of natural reason, in which is the image of God. And yet this does not exclude that grace is necessary to move the affection, just as also through the law is the knowledge of sin, as is said below, 3:20, and yet further grace is required to move the affection. Third, he shows their dignity, in this namely, that although not having such a law, they "are a law to themselves," inasmuch namely as they perform toward themselves the office of the law, instructing themselves and inducing themselves to the good, because, as the Philosopher says in the Ethics, law is speech having coercive force, proceeding from a certain prudence and intellect. And therefore it is said in 1 Timothy 1:9, that "the law is not made for the just man," that is, he is not compelled by an exterior law, but "is laid down for the unjust," who need to be compelled from without. And this is the highest degree of dignity among men, namely that they are induced to the good not by others but by themselves. The second degree is of those who are induced by another, but without coercion. The third is of those who need coercion in order to become good. The fourth is of those who cannot even be directed to the good by coercion. Jeremiah 2:30: "In vain have I struck your children, they have not received discipline." Then, when he says "who show," he shows how they are a law to themselves, which indeed we can take by way of a likeness to the law that is proposed by an exterior man, which is customarily, on account of weakness and for the sake of memory, committed to writing; and likewise those who observe the law without exterior hearing of the law "show the work of the law written," not indeed in ink, but, first and principally, "by the Spirit of the living God," as is said in 1 Corinthians 3:3. Second, also by human diligence, Proverbs 3:3: "Write them in the tables of thy heart," namely the precepts of wisdom. Hence here too it follows "in their hearts," not on parchment, nor on tables of stone or bronze. Jeremiah 31:33: "I will give my law in their bowels, and in their heart will I write it." Then, when he says "their conscience bearing witness," he proves what he had said, namely that the work of the law is inscribed in their hearts, through certain works which announce a writing of this kind. And, first, he sets down those works, of which one is the testimony of conscience, which he touches when he says "their conscience bearing witness to them," which indeed is nothing other than the application of knowledge one has to judging concerning some work, whether it has been well or ill done. Hence conscience of this kind sometimes gives testimony concerning good, according to 2 Corinthians 1:12: "This is our glory, the testimony of our conscience," but sometimes concerning evil, Ecclesiastes 7:23: "Thy conscience knoweth that thou also hast often spoken evil of others." But no one can bear testimony concerning some work, that it is good or evil, except through having knowledge of the law. Hence this very fact, that conscience bears testimony concerning good or evil, is an evident sign that the work of the law is inscribed in the heart of man. Another work is accusation and defense, which cannot exist without knowledge of the law. And as to this he says "and of their thoughts," that is, by their thoughts, "accusing or also defending," that is, accusing them or defending them, after the manner of the Greeks, who use genitives in place of ablatives. And this "one among another." For there arises in a man, concerning some deed, a certain knowledge that accuses, when for some reason he thinks that he has done ill. Psalm 49:21: "I will reprove thee, and set before thy face." Isaiah 3:9: "The shew of their countenance hath answered them." Sometimes too there arises a certain knowledge that defends, when for some reason he thinks he has done well, according to Job 27:6: "My heart doth not reprehend me in all my life." And between this accusation and defense the testimony of conscience holds a place, by which one stands. It can also be read otherwise, so that it is said "their own conscience bearing witness to them," which conscience namely is not only of works, but also of thoughts, of which namely a man has conscience; but the first reading is better. But because testimony, accusation, and defense have a place in judgment, he treats, second, of judgment of this kind, showing the time when he says "in the day," which he says not to designate a quality of time, but the manifestation of hidden things. 1 Corinthians 4:5: "He will bring to light the hidden things of darkness." Sometimes, however, it is called night on account of the uncertainty of that hour. Matthew 25:6: "At midnight there was a cry made." Now the thoughts accusing or defending are said to be "in the day of judgment," not those which will then exist, because then to each one salvation or damnation will be manifest, but the defense or accusation of the thoughts which now exist, and the testimony of conscience which now exists, will be represented to man on that day, the divine power bringing it about, as Augustine says, in Book 2 of the City of God. But the knowledge of those thoughts which remain in the soul seems to be nothing other, as the Gloss says, than the guilt of punishment or the merit that follows from them. He also shows the author of the judgment, saying "when God shall judge." Psalm 95:13: "He shall judge the world in equity." He also determines concerning what things the judgment will be, when he says "the secrets of men," concerning which men now cannot judge. 1 Corinthians 4:5: "He will bring to light the hidden things of darkness." He also shows the teaching from which faith concerning this judgment is had, when he says "according to my gospel," that is, preached by me. Matthew 12:36: "Every idle word," and so on. Now he says "my gospel," although he could not say "his baptism," and he is a minister of both, because in baptism nothing of man's industry operates, but in preaching the gospel the industry of the preacher operates, Ephesians 3:4: "As you reading may understand my knowledge in the mystery," according as you are able. Afterward he sets down to whom the judgment has been given, when he adds "by Jesus Christ," who namely has been constituted by God "judge of the living and the dead," as is said in Acts 10:42, and John 5:21-22: "The Father hath given all judgment to the Son," who namely will appear in judgment to the good and to the evil: but to the good according to the glory of his divinity, Isaiah 33:17: "They shall see the king in his beauty," but to the evil according to the nature of his humanity, Revelation 1:7: "Every eye shall see him."”

Post-Reformation

c. 1650 – 1900
1771
A.D.
John Gill Reformed
1697–1771
“Which show the work of the law written in their hearts,.... Though the Gentiles had not the law in form, written on tables, or in a book, yet they had "the work", the matter, the sum and substance of it in their minds; as appears by the practices of many of them, in their external conversation. The moral law, in its purity and perfection, was written on the heart of Adam in his first creation; was sadly obliterated by his sin and fall; upon several accounts, and to answer various purposes, a system of laws was written on tables of stone for the use of the Israelites; and in regeneration the law is reinscribed on the hearts of God's people; and even among the Gentiles, and in their hearts, there are some remains of the old law and light of nature, which as by their outward conduct appears, so by the inward motions of their minds, their conscience also bearing witness; for, as the Jews say (r) , "the soul of a man witnesses in him"; for, or against him: and their thoughts the meanwhile accusing or else excusing one another; and this the Heathens themselves acknowledge, when they (s) speak of "tameion dikasthrion kai krithrion thv suneidhsewv, "the conclave, tribunal and judgment of conscience"; and which they call , "the most righteous judge": whose judgment reason receives, and gives its suffrage to, whether worthy of approbation or reproof; when it reads in the memory as if written on a table the things that are done, and then beholding the law as an exemplar, pronounces itself either worthy of honour or dishonour.'' (r) T. Bab. Chagigah, fol. 16. 1. & Taanith, fol. 11. 1. (s) Hierocles in Carmina Pythagor. p. 81, 206, 209, 213, 214.”
Source
1832
A.D.
Adam Clarke Methodist
1762–1832
“For not the hearers of the law, etc. - It does not follow, because one people are favored with a Divine revelation, that therefore they shall be saved; while the others who have not had that revelation, shall finally perish: this is not God's procedure; where he has given a law - a Divine revelation, he requires obedience to that law; and only those who have been doers of that law - who have lived according to the light and privileges granted in that revelation, shall be justified - shall be finally acknowledged to be such as are fit for the kingdom of God.”
Source
1871
A.D.
1871
“For not the hearers, &c.--As touching the Jews, in whose ears the written law is continually resounding, the condemnation of as many of them as are found sinners at the last involves no difficulty; but even as respects the heathen, who are strangers to the law in its positive and written form--since they show how deeply it is engraven on their moral nature, which witnesses within them for righteousness and against iniquity, accusing or condemning them according as they violate or obey its stern dictates--their condemnation also for all the sin in which they live and die will carry its dreadful echo in their own breasts.”
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.