'Foolish' in the Bible

Do ye thus requite Jehovah, O foolish people and unwise? Is not he thy father that hath bought thee? He hath made thee, and established thee.

They have moved me to jealousy with that which is not God; They have provoked me to anger with their vanities: And I will move them to jealousy with those that are not a people; I will provoke them to anger with a foolish nation.