2 Corinthians 1:17; 2 Corinthians 9:4; 2 Corinthians 11:10; 2 Corinthians 13:3

2 Corinthians 1:17

17 When I therefore was thus minded, did I use lightness? or the things that I purpose, do I purpose according to the flesh, that with me there should be yea yea, and nay nay?

2 Corinthians 9:4

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.

2 Corinthians 11:10

10 As the truth of Christ is in me, no man shall stop me of this boasting in the regions of Achaia.

2 Corinthians 13:3

3 Since ye seek a proof of Christ speaking in me, which to you-ward is not weak, but is mighty in you.