2 Bible Verses about Boasting, Legitimate

so that, as the Scripture says, "Let him who boasts boast in the Lord."

You look at me and measure me by outward appearances. If anyone is confident in himself that he belongs to Christ, let him have another thought about himself, that just as he belongs to Christ, so do I. For if I do boast a little too much about my authority, which the Lord gave me for building you up and not for tearing you down, I shall never have to blush for doing so.