John Chrysostom

"For I know," says he, "that this shall turn to my salvation through your supplication, and the supply of the Spirit of Jesus Christ." Nothing is more villainous than the Devil. So does he everywhere involve his own in unprofitable toils, and rends them. Not only does he not suffer them to obtain the prizes, but he even subjects them to punishment. …

Homily on Philippians 2 ↗

Theophylact of Ohrid

What is "this"? That through enmity and jealousy toward me the preaching of the word increases. Pay attention to the humility of the Apostle Paul. Through his countless good deeds he had already merited salvation; yet he says: only if I am deemed worthy of your prayers and through them the Spirit is granted in greater abundance, only then shall I receive salvation. By "supply" he means the most abundant bestowal of the grace of the Holy Spirit.

Commentary on Philippians ↗

Thomas Aquinas

Then when he says, for I know that through your prayers..., he mentions the fruit resulting from his progress: first, he mentions the fruit; secondly, he raises a question (1:22). In regard to the first he does three things: first, he mentions the fruit; secondly, his help in obtaining it (1:19); thirdly, he assigns the material of the fruit (1:20b). He says, therefore: I rejoice in these things on account of the fruit resulting from them for life everlasting: "Israel is saved by the Lord with everlasting salvation" (Is. …

Commentary on Philippians ↗