2 Corinthians 10:16

10:16 so that we may preach the gospel in the regions that lie beyond you, and not boast of work already done in another person’s area.

2 Corinthians 12:6

12:6 For even if I wish to boast, I will not be a fool, for I would be telling the truth, but I refrain from this so that no one may regard me beyond what he sees in me or what he hears from me,