'Foolishness' in the Bible

For the word of the cross is to them that perish foolishness; but unto us who are saved it is the power of God.

For seeing that in the wisdom of God the world through its wisdom knew not God, it was God's good pleasure through the foolishness of the preaching to save them that believe.

but we preach Christ crucified, unto Jews a stumblingblock, and unto Gentiles foolishness;

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

Now the natural man receiveth not the things of the Spirit of God: for they are foolishness unto him; and he cannot know them, because they are spiritually judged.

For the wisdom of this world is foolishness with God. For it is written, He that taketh the wise in their craftiness: