Ecclesiastes 7:19-22 - Wisdom Is Valuable, But No One Is Completely Righteous
19 Wisdom strengtheneth the wise more than ten mighty men that are in a city. 20 Surely there is not a righteous man upon earth, that doeth good and sinneth not.
21 Also give not heed unto all words that are spoken, lest thou hear thy servant curse thee. 22 For also thine own heart knoweth that oftentimes thou thyself likewise hast cursed others.