1 Corinthians 1:21

21For since, in the wisdom of God, the world did not know God through wisdom, it pleased God through the folly of what we preach
Or  the folly of preaching
to save those who believe.

1 Corinthians 3:18

18 bLet no one deceive himself. cIf anyone among you thinks that he is wise in this age, let him become a fool that he may become wise.
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