Philippians 1:16

The one preach Christ of contention
That is, those that preached of envy and strife, an not of good will to Christ, to the Gospel, to the souls of men, or to the apostle; and though they preached Christ, yet

not sincerely
or "purely"; not but that they delivered the sincere milk of the word, and preached the pure Gospel of Christ, without any mixture and adulteration; but then they did not preach it with a sincere heart, and a pure intention; for this respects not the doctrine they preached, but their views in it, which were not honest and upright; they did not preach Christ from a principle of love to his person, and from an inward experience of the power of his Gospel, and a zealous affection for it, and firm attachment to it, and with a view to the glory of God, the honour of Christ, and the good of immortal souls; but were influenced by avarice, ambition, and envy: they had very evil designs upon the apostle,

supposing to add affliction to my bonds;
imagining that by their free and bold way of preaching Christ openly in the city without control, and with impunity, it might be thought that the apostle did not lie in bonds for preaching Christ, but for some other crime; or otherwise why were not they laid hold on and put under confinement also? or thinking that by such numbers of them frequently preaching Christ about the city, it would either incense and stir up the Jews, Paul's accusers, to prosecute him more vigorously; or excite Nero to take more cognizance of his case, and either more closely confine him, or hasten the bringing his cause to a hearing, and him to punishment, as the ringleader of this sect, to the terror of others; but this they could not do without exposing themselves to great danger, unless they were determined to recant, as soon as they should be taken up; wherefore it should rather seem that their view was in preaching Christ to carry away the glory of it from the apostle, and take it to themselves; and fancying that he was a man of the same cast with them, desirous of vain glory, they thought it would afflict and distress him, he being in bonds, and not at liberty to exert himself, and make use of his superior gifts and abilities; but in this they were mistaken, he was so far from being made uneasy hereby, that he rejoiced at the preaching of Christ, let their intentions be what they would; and therefore he does not say that they did add affliction to his bonds; but they "supposed", or thought, that the method they took would do it.