2 Corinthians 10:15-18

We do not boast beyond limit in the labors of others. But our hope is that as your faith increases, our area of influence among you may be greatly enlarged, so that we may preach the gospel in lands beyond you, without boasting of work already done in another’s area of influence. “Let the one who boasts, boast in the Lord.” For it is not the one who commends himself who is approved, but the one whom the Lord commends.