2 Corinthians 4:5

4:5 For we do not proclaim ourselves, but Jesus Christ as Lord, and ourselves as your slaves for Jesus’ sake.

2 Corinthians 6:4

6:4 But as God’s servants, we have commended ourselves in every way, with great endurance, in persecutions, in difficulties, in distresses,

2 Corinthians 9:3-4

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. 9:4 For if any of the Macedonians should come with me and find that you are not ready to give, we would be humiliated (not to mention you) by this confidence we had in you.

2 Corinthians 12:15

12:15 Now I will most gladly spend and be spent for your lives! If I love you more, am I to be loved less?

2 Corinthians 13:9

13:9 For we rejoice whenever we are weak, but you are strong. And we pray for this: that you may become fully qualified.