1 Corinthians 1:18 For the message of the cross is foolishness to those who are perishing, but to us who are being saved it is the power of God.

1 Corinthians 1:23 But we preach Christ crucified: a stumbling block to Jews and foolishness to Gentiles.

John 14:17 He is the Spirit of truth. The world cannot accept him, because it neither sees him nor knows him. But you know him, for he lives with you and will be in you.

1 Corinthians 2:14 The man without the Spirit does not accept the things that come from the Spirit of God, for they are foolishness to him, and he cannot understand them, because they are spiritually discerned.