'Foolish Man' in the Bible

For wrath kills the foolish man, and envy slays the simple one.

Arise, O God, plead your own cause: remember how the foolish man reproaches you daily.

Go from the presence of a foolish man, when you perceive not in him the lips of knowledge.

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

There is treasure to be desired and oil in the dwelling of the wise; but a foolish man spends it up.

If a wise man contends with a foolish man, whether the foolish man rages or laughs, there is no rest.

And every one that hears these sayings of mine, and does them not, shall be likened unto a foolish man, who built his house upon the sand: