John Chrysostom

"And that I may be found in Him, not having a righteousness of mine own, even that which is of the Law." If he who had righteousness, ran to this other righteousness because his own was nothing, how much rather ought they, who have it not, to run to Him? And he well said, "a righteousness of mine own," not that which I gained by labor and toil, but that which I found from grace. If then he who was so excellent is saved by grace, much more are you. …

Homily on Philippians 11 ↗

Theophylact of Ohrid

So that I might not have my own righteousness, derived from the works of the law, as though already accomplished by me, for there is no righteousness from works, because I have not accomplished these works; but that I might have the righteousness that comes through faith in Christ, which is the righteousness from God, that is, a gift of God — a righteousness that justifies believers by grace. "For if you confess with your mouth Jesus as Lord, and believe in your heart, you will be saved" (Rom. 10:9). …

Commentary on Philippians ↗

Thomas Aquinas

Above, he showed that he scorned past gains for the sake of Christ, that is, in order to know and win Christ; here he intends to explain these things: first, how he desires to gain Christ and be found in Him by justice; secondly, by enduring sufferings (3:10). In regard to the first, he does two things: first, he shows which justice he abandoned; secondly, which one he now seeks (3:9). …

Commentary on Philippians ↗