2 Corinthians 4:2
Instead, we have renounced secret and shameful ways. We do not practice deceit, nor do we distort the word of God. On the contrary, by open proclamation of the truth, we commend ourselves to every man's conscience in the sight of God.

2 Corinthians 6:4-10
Rather, as servants of God we commend ourselves in every way: in great endurance; in troubles, hardships, and calamities; . . .

2 Corinthians 11:4, 6
For if someone comes and proclaims a Jesus other than the One we proclaimed, or if you receive a different spirit than the One you received, or a different gospel than the one you accepted, you put up with it way too easily. . . .

Romans 15:18, 19
I will not presume to speak of anything except what Christ has accomplished through me in leading the Gentiles to obedience by word and deed, . . .

1 Corinthians 1:5-7
For in Him you have been enriched in every way, in all speech and all knowledge, . . .

1 Corinthians 9:2
Even if I am not an apostle to others, surely I am to you. For you are the seal of my apostleship in the Lord.

1 Corinthians 14:18
I thank God that I speak in tongues more than all of you.