2 Corinthians 11:13-18
11:13 For such people are false apostles, deceitful workers, disguising themselves as apostles of Christ.
11:14 And no wonder, for even Satan disguises himself as an angel of light.
11:15 Therefore it is not surprising his servants also disguise themselves as servants of righteousness, whose end will correspond to their actions.
Paul’s Sufferings for Christ
11:16 I say again, let no one think that I am a fool. But if you do, then at least accept me as a fool, so that I too may boast a little.
11:17 What I am saying with this boastful confidence I do not say the way the Lord would. Instead it is, as it were, foolishness.
11:18 Since many are boasting according to human standards, I too will boast.
2 Corinthians 11:31
11:31 The God and Father of the Lord Jesus, who is blessed forever, knows I am not lying.