1 Corinthians 1:17

1:17 For Christ did not send me to baptize, but to preach the gospel – and not with clever speech, so that the cross of Christ would not become useless.

1 Corinthians 2:1

2:1 When I came to you, brothers and sisters, I did not come with superior eloquence or wisdom as I proclaimed the testimony of God.

1 Corinthians 5:2-3

5:2 And you are proud! Shouldn’t you have been deeply sorrowful instead and removed the one who did this from among you? 5:3 For even though I am absent physically, I am present in spirit. And I have already judged the one who did this, just as though I were present.