'Foolish Man' in the Bible

For resentment kills the foolish man, and jealousy kills the simple.

Arise, God! Plead your own cause. Remember how the foolish man mocks you all day.

Stay away from a foolish man, for you won't find knowledge on his lips.

A wise son makes a father glad, but a foolish man despises his mother.

There is precious treasure and oil in the dwelling of the wise; but a foolish man swallows it up.

If a wise man goes to court with a foolish man, the fool rages or scoffs, and there is no peace.

Everyone who hears these words of mine, and doesn't do them will be like a foolish man, who built his house on the sand.