'Foolish' in the Bible
Everyone who hears these words of mine and does not do them is like a foolish man who built his house on sand.
Jesus said, "Even after all this, are you still so foolish?
When the foolish ones took their lamps, they did not take extra olive oil with them.
The foolish ones said to the wise, 'Give us some of your oil, because our lamps are going out.'
He said to them, "Are you so foolish? Don't you understand that whatever goes into a person from outside cannot defile him?
So he said to them, "You foolish people -- how slow of heart to believe all that the prophets have spoken!
who said by the Holy Spirit through your servant David our forefather, 'Why do the nations rage, and the peoples plot foolish things?
Also some of the Epicurean and Stoic philosophers were conversing with him, and some were asking, "What does this foolish babbler want to say?" Others said, "He seems to be a proclaimer of foreign gods." (They said this because he was proclaiming the good news about Jesus and the resurrection.)
I am a debtor both to the Greeks and to the barbarians, both to the wise and to the foolish.
Where is the wise man? Where is the expert in the Mosaic law? Where is the debater of this age? Has God not made the wisdom of the world foolish?
But God chose what the world thinks foolish to shame the wise, and God chose what the world thinks weak to shame the strong.
Guard against self-deception, each of you. If someone among you thinks he is wise in this age, let him become foolish so that he can become wise.
You foolish Galatians! Who has cast a spell on you? Before your eyes Jesus Christ was vividly portrayed as crucified!
Are you so foolish? Although you began with the Spirit, are you now trying to finish by human effort?
Neither should there be vulgar speech, foolish talk, or coarse jesting -- all of which are out of character -- but rather thanksgiving.
For this reason do not be foolish, but be wise by understanding what the Lord's will is.
But reject foolish and ignorant controversies, because you know they breed infighting.
For we too were once foolish, disobedient, misled, enslaved to various passions and desires, spending our lives in evil and envy, hateful and hating one another.
But avoid foolish controversies, genealogies, quarrels, and fights about the law, because they are useless and empty.
For God wants you to silence the ignorance of foolish people by doing good.