Cross reference
Philippians 3:4
4 though I myself might have confidence even in the flesh. If any other man thinks that he has confidence in the flesh, I yet more:
2 Corinthians 11:18-22
18 Seeing that many boast after the flesh, I will also boast.
19 For you bear with the foolish gladly, being wise.
20 For you bear with a man, if he brings you into bondage, if he devours you, if he takes you captive, if he exalts himself, if he strikes you on the face.
21 I speak by way of disparagement, as though we had been weak. Yet however any is bold (I speak in foolishness), I am bold also.
22 Are they Hebrews? So am I. Are they Israelites? So am I. Are they the seed of Abraham? So am I.