2 Corinthians 3:2

3:2 You yourselves are our letter, written on our hearts, known and read by everyone,

2 Corinthians 6:3

6:3 We do not give anyone an occasion for taking an offense in anything, so that no fault may be found with our ministry.

2 Corinthians 6:7

6:7 by truthful teaching, by the power of God, with weapons of righteousness both for the right hand and for the left,

2 Corinthians 8:18

8:18 And we are sending along with him the brother who is praised by all the churches for his work in spreading the gospel.

2 Corinthians 11:8

11:8 I robbed other churches by receiving support from them so that I could serve you!