'Foolish' in the Bible

“Deliver me from all my transgressions;Make me not the reproach of the foolish.

This is the way of those who are foolish,And of those after them who approve their words. Selah.

Remember this, O Lord, that the enemy has reviled,And a foolish people has spurned Your name.

Arise, O God, and plead Your own cause;Remember how the foolish man reproaches You all day long.