1 Corinthians 1:18, 21, 23

The message of the cross is foolish to those who are headed for destruction! But we who are being saved know it is the very power of God.

Since God in his wisdom saw to it that the world would never know him through human wisdom, he has used our foolish preaching to save those who believe.

So when we preach that Christ was crucified, the Jews are offended and the Gentiles say it’s all nonsense.