This is Chrysostom on Philippians 1:7 from his first homily on that letter:
“So then his bonds were a confirmation of the Gospel, and a defense. And most truly so. How? For if he had shunned bonds, he might have been thought a deceiver; but he that endures every thing, both bonds and affliction, shows that he suffers this for no human reason, but for God, who rewards. For no one would have been willing to die, or to incur such great risks, no one would have chosen to come into collision with such a king, I mean Nero, unless he looked to another far greater King. Truly a ‘confirmation of the Gospel’ were his bonds” (NPNF 1 13:186).