1 Corinthians 1:13-15

1:13 Is Christ divided? Paul wasn’t crucified for you, was he? Or were you in fact baptized in the name of Paul? 1:14 I thank God that I did not baptize any of you except Crispus and Gaius, 1:15 so that no one can say that you were baptized in my name!

1 Corinthians 1:23

1:23 but we preach about a crucified Christ, a stumbling block to Jews and foolishness to Gentiles.