1 Corinthians 1:18, 23
1 Corinthians 1:18 NCV
The teaching about the cross is foolishness to those who are being lost, but to us who are being saved it is the power of God.
1 Corinthians 1:23 NCV
But we preach a crucified Christ. This causes the Jews to stumble and is foolishness to non-Jews.