Theophylact of Ohrid

That is, although I am bound, I speak with even greater boldness and do not remain silent, but my preaching has reached even the praetorium itself, that is, the royal palace itself, and has spread throughout the entire city. And this was accomplished "in Christ," that is, this is not my doing, but Christ's. Or: "my bonds in Christ," that is, the bonds which I endure for Christ.

Commentary on Philippians ↗

Clement of Alexandria

Fit objects for admiration are the Stoics, who say that the soul is not affected by the body, either to vice by disease, or to virtue by health; but both these things, they say, are indifferent. And indeed Job, through exceeding continence, and excellence of faith, when from rich he became poor, from being held in honour dishonoured, from being comely unsightly, and sick from being healthy, is depicted as a good example, putting the Tempter to shame, blessing his Creator; bearing what came second, as the first, and most clearly …

The Stromata Book 4 ↗

Thomas Aquinas

Then he shows his own progress; secondly, that of others (1:14). In regard to himself, of course, it was obvious that he suffered for Christ with constancy, so that it has become known that my imprisonment is for Christ. This redounds to Christ's glory: "But let none of you suffer as a murderer, or a thief, or a wrongdoer, or a mischief-maker; yet if one suffers as a Christian, let him not be ashamed, but under that name let him glorify God" (1 Pet. 4:15). Throughout the whole praetorian guard, and in Caesar's court.

Commentary on Philippians ↗