'Foolish' in the Bible
And every one who hears these my words and does not do them, he shall be likened to a foolish man, who built his house upon the sand;
They that were foolish took their torches and did not take oil with them;
And the foolish said to the prudent, Give us of your oil, for our torches are going out.
an instructor of the foolish, a teacher of babes, having the form of knowledge and of truth in the law:
Where is the wise? where scribe? where disputer of this world? has not God made foolish the wisdom of the world?
But God has chosen the foolish things of the world, that he may put to shame the wise; and God has chosen the weak things of the world, that he may put to shame the strong things;
Let no one deceive himself: if any one thinks himself to be wise among you in this world, let him become foolish, that he may be wise.
and filthiness and foolish talking, or jesting, which are not convenient; but rather thanksgiving.
For this reason be not foolish, but understanding what is the will of the Lord.
But foolish and senseless questionings avoid, knowing that they beget contentions.
But foolish questions, and genealogies, and strifes, and contentions about the law, shun; for they are unprofitable and vain.