2 Corinthians 7:14; 2 Corinthians 9:4

14 For if I have boasted any thing to him of you, I am not ashamed ; but as we spake all things to you in truth, even so our boasting, which I made before Titus, is found a truth.
4 Lest haply if they of Macedonia come with me, and find you unprepared, we (that we say not, ye) should be ashamed in this same confident boasting.