Sometimes used in the Bible in a good sense, denoting sincerity, candor, and an artless ignorance of evil, Romans 16:19 2 Corinthians 1:12 11:3; sometimes in a bad sense, denoting heedless foolishness both mental and moral, Proverbs 1:22 9:4 14:15 22:3; and sometimes in the sense of mere ignorance or inexperience, 2 Samuel 15:11 Proverbs 1:4 21:11 .