'Foolishness' in the Bible

For the word of the cross is to them that perish foolishness, but to us that are saved it is God's power.

For since, in the wisdom of God, the world by wisdom has not known God, God has been pleased by the foolishness of the preaching to save those that believe.

but we preach Christ crucified, to Jews an offence, and to nations foolishness;

Because the foolishness of God is wiser than men, and the weakness of God is stronger than men.

For the wisdom of this world is foolishness with God; for it is written, He who takes the wise in their craftiness.