2 Corinthians 7:14

7:14 For if I have boasted to him about anything concerning you, I have not been embarrassed by you, but just as everything we said to you was true, so our boasting to Titus about you has proved true as well.

2 Corinthians 9:2-3

9:2 because I know your eagerness to help. I keep boasting to the Macedonians about this eagerness of yours, that Achaia has been ready to give since last year, and your zeal to participate has stirred up most of them. 9:3 But I am sending these brothers so that our boasting about you may not be empty in this case, so that you may be ready just as I kept telling them.

2 Corinthians 10:13

10:13 But we will not boast beyond certain limits, but will confine our boasting according to the limits of the work to which God has appointed us, that reaches even as far as you.