2 Corinthians 2:17

2:17 For we are not like so many others, hucksters who peddle the word of God for profit, but we are speaking in Christ before God as persons of sincerity, as persons sent from God.

2 Corinthians 11:6

11:6 And even if I am unskilled in speaking, yet I am certainly not so in knowledge. Indeed, we have made this plain to you in everything in every way.

2 Corinthians 11:21

11:21 (To my disgrace I must say that we were too weak for that!) But whatever anyone else dares to boast about (I am speaking foolishly), I also dare to boast about the same thing.

2 Corinthians 12:19

12:19 Have you been thinking all this time that we have been defending ourselves to you? We are speaking in Christ before God, and everything we do, dear friends, is to build you up.