The interpretation timeline
Philippians 1:17 Douay-Rheims

And some out of contention preach Christ not sincerely: supposing that they raise affliction to my bands.

A.D. 220 – 1832 5 witnesses

Patristic

before A.D. 750
220
A.D.
Tertullian Patristic
c. A.D. 150–220
“What is skewed among those who "proclaim Christ out of partisanship" is their temperament and their motive, not the content of their proclamation. Paul exposes these bad tempers as the sole cause of their disunity, but these bad tempers apparently do not have a bad effect on the mysteries of the faith. There is still only one Christ and one God. This does not change, regardless of what motives may come into play in preaching him. So Paul is able to say that "it is nothing to me whether Christ be preached on a pretext or in truth; Christ is proclaimed." What really matters is the one who is preached, whether through pretentiousness or in true faith. When Christ is preached in truth he is being preached faithfully. The rule of truth remains what it is, regardless of who preaches it—better or worse, there is but one truth. Meanwhile the conduct of preachers varies. Some preach truly, single-mindedly. Others preach insincerely, with affectations.”
Source
407
A.D.
John Chrysostom Patristic
A.D. 347–407
“"But the other of love, knowing that I am set for the defense of the Gospel." What means, "that I am set for the defense of the Gospel"? It is, They are preparing for the account which I must give to God, and assisting me. What is meant by "for the defense"? I have been appointed to preach, I must give account, and answer for the work to which I have been appointed; they assist me, that my defense may be easy; for if there be found many who have been instructed and have believed, my defense will be easy. So it is possible to do a good work, from a motive which is not good. And not only is there no reward in store for such an action, but punishment. For as they preached Christ from a desire to involve the preacher of Christ in greater perils, not only shall they receive no reward, but shall be subject to vengeance and punishment. "And some of love." That is, they know that I must give account for the Gospel.”
Source

Scholastic

c. 1100 – 1500
1272
A.D.
Thomas Aquinas Catholic
1225–1274
“Having set out the matter of joy concerning future hope, he here shows for what he makes his prayer on their behalf. And first he sets forth his desire, which is shown to be utterly fervent; second, the matter of the prayer, at *and this I pray*, etc. And because the desire of the heart is manifest to God alone, therefore he calls God as witness that he prays for them with desire. Job ch. 12: *behold, in heaven is my witness*, namely God, etc. *How I long for you* — namely I — existing in the bowels of Jesus Christ. Or, how I long for you to be in them; as if he were to say: how I long for your salvation and participation in the visceral charity of Christ. Luke 1:78: *through the bowels of the mercy of God*, etc.; as if to say: because the power of love reaches to the depths and inmost parts of the heart. Or, I long that you be in the bowels of Jesus Christ, that is, that you love him intimately, so that you may also be loved by him; for in this consists the life of man. Then, when he says *and this I pray*, etc., he sets forth the prayer, and he desires three goods. First, as to the increase of interior charity. For interior affection is perfected through charity, and therefore for one who does not have charity, it should be desired that he have it; but for one who has it, that it be perfected. Hence he says *that charity*, etc. But for the increase of charity, God must be prayed to, because God alone works this in us. 2 Cor. 9:8: *And God is able to make all grace abound in you, that, always having all sufficiency in all things, you may abound unto every good work*, etc. And this it is necessary that we too ask, because Matt. 5:20: *unless your justice abound more than that of the Scribes and Pharisees, you shall not enter into the kingdom of heaven*. Second, as to the intellect. Hence he says *in all knowledge*. But does knowledge come from charity? Yes, because it is said in 1 John 2:27: *and as for you, let the anointing which you have received from him abide in you, and you have no need that any man teach you, but as his anointing teaches you concerning all things*, etc. Likewise, charity is the spirit, of which it is said in John 16:13: *when that spirit of truth shall come, he will teach you all*, etc. The reason for this is that whoever has a habit — if the habit is right, a right judgment follows from it concerning those things that pertain to that habit; but if it is corrupt, a false one. Just as, concerning venereal matters, the temperate man has good judgment, while the intemperate man does not, but a false one. But all things that are done by us are to be informed by charity, and therefore he who has charity has right judgment, also as to things knowable. And thus he says *in all knowledge*, namely by which he may recognize the truth and adhere firmly concerning those things that belong to faith. This is the knowledge of the saints, of which it is spoken in Wisdom 10:10. And as to things to be done, and thus he says *and in all sense*, which is the cognitive power concerning exterior objects. And it is proper to it that it immediately judges rightly concerning its proper sensible object. And therefore this name has been transferred to the interior judgment of reason; hence those are called "sensible" who have right judgment concerning things to be done. Wisdom 1:1: *have a sense of the Lord in goodness*, etc. Wisdom 6:16: *to think, then, upon her, is a consummated sense*, etc. But this sense ought to be not only considerative but also discretive between good and evil, and between good and better. Hence he adds *that you may approve*, etc. Note that charity perfects the sense so that it approves good things; but perfect charity, so that it approves better things. 1 Cor. 12:31: *be zealous for the better gifts*, etc.; and below, ch. 14: *follow after charity*, etc. And therefore he says *more excellent things*. Third, as to the effect. And first he sets forth immunity from evil; second, perfection in good. The first, in that he says *that you may be sincere*. For there is a twofold sin to be avoided: namely, that of interior corruption, by which a man is corrupted in himself, and this is excluded by sincerity. 1 Cor. 5:8: *in the unleavened bread of sincerity*, etc. The other is against one's neighbor, namely offense. And therefore he says *and without offense*. 1 Cor. 4:10: *be without offense to the Jews and the Gentiles, and to the Church of God, as I also*, etc. And 2 Cor. 6:3: *giving no offense to any man*, etc. *Unto the day of Christ Jesus*, that is, until the end of life. Matt. 24:13: *he who shall persevere unto the end, he shall be saved*. As to grace he says *filled with the fruit of justice*, so that the works of justice are, as it were, a fruit. Rom. 6:22: *you have your fruit unto sanctification*, etc. Or *the fruit of justice*, that is, the reward of justice, namely the crown. 2 Tim. 4:8: *as to the rest, there is laid up for me a crown of justice*, etc. Wisdom 4: *for the fruit of good labors is glorious*, etc. And this is had through Christ, because all things that we do are good through him. John 15:5: *without me you can do nothing*, etc. And these things are to be done for this end, namely unto the glory and praise of God, because from the works of the saints God is glorified, since others thereby break forth into the praise of God. Ps. 150:1: *praise the Lord in his saints*, etc. Jer. 33:9: *it shall be to me a name, and a joy, and a praise, and an exultation to all the nations of the earth, who shall hear of all the good things*, etc. Then, when he says *but I would have you know*, etc., he admonishes concerning things to come. And first he sets forth examples to be followed and to be avoided; second, he concludes with a moral admonition in ch. 4, at *therefore, my most beloved brethren*, etc. Concerning the first he does two things, for first he shows what things are to be imitated; second, what things are to be avoided, ch. 3, at *as for the rest*, etc. Likewise the first is divided into two, for first he puts himself forward for them to imitate; second, others, ch. 2, at *if there be therefore*, etc. Likewise the first into three, for first he sets forth as an example his own progress; second, the joy which he has from that progress, at *for what*, etc.; third, the fruit from his own progress, at *for I know*, etc. Likewise the first into two. First he sets forth the progress; second, the manner, at *so that my bonds*, etc. He says therefore: I have admonished you unto progress, and that you may have my progress as a pattern, I wish you to know, both the things that concern me — outwardly, because the tribulations, even though they were exterior, did not change me inwardly, but rather they turned out unto progress, since from them the faith preached made greater progress. 2 Cor. 1:6: *whether we be in tribulation, it is for your exhortation and salvation; or whether we be comforted, it is for your consolation*, etc. And he shows the progress. First as to himself; second as to others, at *so that the more*, etc. As to himself indeed it had been manifest that he suffered such things for Christ constantly, so that he was bound in chains, whence it is said *so that my bonds*, etc., which is glorious for Christ's sake. 1 Peter 4:15: *let none of you suffer as a murderer, or a thief, or a coveter of other men's goods; but if as a Christian, let him not be ashamed*, etc. *In every praetorium*, as in the court of Caesar, etc. But on the part of others, the faith was growing in common. Hence he says *so that the more*, etc. 1 Macc. ch. 4: concerning the elephants. Ecclus. 10:2: *according to the judge of the people, so also are his ministers*, etc. Prov. 18: *the just, like a confident lion, shall be without dread*, etc. Yet on the part of others there is diversity, because some spoke well, some ill. And those who spoke well, some did so out of general charity and some out of a special love for the apostle. And those who spoke ill, some did so out of general malice, some out of a special hatred toward the apostle. But as it seems to me, the apostle shows a twofold cause on account of which some were preaching. First, on account of envy. And therefore the apostle shows their depraved intention, saying *some indeed out of envy*, etc. James 3:16: *where jealousy and contention are, there is inconstancy, and every depraved work*. 1 Cor. 3:3: *since there is among you jealousy and contention, are you not carnal?* Second, on account of love of Christ and of the Gospel. Hence he says *some out of good*, etc. Ps. 150:20: *deal kindly, in good will*, etc. But the apostle adds, saying *but some out of charity*, namely that which produces good will, etc., because they preached in order to supply the deficiency of me as teacher. Then the apostle explains what he had said, stating that some preached not according to a sound intention, but out of contention. Their corrupt intention was manifest in two ways: in one way, that by preaching publicly, they might cause disturbance among the Gentile people against the apostle, over and above that which he already had. In the other way, because they believed that Paul, hearing them usurp the office committed to him, would be troubled, and thereby affliction would be added to one already afflicted.”

Post-Reformation

c. 1650 – 1900
1771
A.D.
John Gill Reformed
1697–1771
“But the other of love,.... Those that were truly brethren in the Lord, who had received the grace of God in truth, to whom the Gospel was come in power, and who had a spiritual and experimental knowledge of Christ, and of the mysteries of his grace; these preached Christ of love, "out of the love of him", as the Ethiopic version reads; that is, out of love to Christ, who to them was exceeding precious, altogether lovely, the chiefest among ten thousands, and their hearts being hot and burning with love to him, they therefore spoke of him with their tongues; and out of love to the Gospel of Christ, which with them was the pearl of great price, and every truth of it more valuable than gold, silver, and precious stones; and out of love to the church of Christ and the members of it, that their souls might be fed and nourished with the wholesome words of Christ, might be comforted with the doctrines of grace, and be established and built up in their most holy faith; and out of love to the souls of others, knowing their miserable estate by nature, and the danger they were in, and therefore preached Christ as the only way of salvation, whereby they could escape the wrath to come; and out of love to the apostle likewise, which the following clause shows, knowing that I am set for the defence of the Gospel; meaning either that they knew he was a chosen vessel, to bear the name of Christ, and preach his Gospel in the world; that he was ordained and appointed a minister of it before the world was; separated to it from his mother's womb, and was called unto, and sent to preach it by Christ, and was set apart for it by the church; and was in a very eminent manner qualified to defend it, by preaching, disputing, writing, and suffering: or that they knew that he was laid, or lay, as the words may rendered, in prison, for defending the Gospel of Christ; yea, they knew that his lying in prison was in defence of the Gospel; and therefore, out of love to him, they joined issue with him to defend the Gospel; as he by suffering for it, so they by preaching it, which they knew full well would be matter of great joy to him.”
Source
1832
A.D.
Adam Clarke Methodist
1762–1832
“The other of love - Through a sincere desire, not only to make known the way of salvation to the people, but also to vindicate and help the apostle, because they considered him as appointed by God to preach and defend the Gospel. The 16th and 17th verses are transposed by ABDEFG, and several others; the Syriac, Arabic of Erpen, Coptic, Sahidic, Ethiopic, Armenian, Vulgate, Itala, and several of the fathers. On this evidence Griesbach transposed them in his edition.”
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.