'Foolish' in the Bible

My wounds are infected and starting to smell, because of my foolish sins.

O God, you are aware of my foolish sins; my guilt is not hidden from you.

Remember how the enemy hurls insults, O Lord, and how a foolish nation blasphemes your name!

I will listen to what God the Lord says. For he will make peace with his people, his faithful followers. Yet they must not return to their foolish ways.