'Foolish' in the Bible

For my people is foolish, they have not known me; they are sottish children, and they have none understanding: they are wise to do evil, but to do good they have no knowledge.

Therefore I said, Surely these are poor; they are foolish: for they know not the way of the LORD, nor the judgment of their God.

Hear now this, O foolish people, and without understanding; which have eyes, and see not; which have ears, and hear not:

But they are altogether brutish and foolish: the stock is a doctrine of vanities.