Ecclesiastes 7:15-24

15All this have I seen in my days of vanity: there is a righteous man that perisheth in his righteousness, and there is a wicked man that prolongeth his life in his evil-doing. 16Be not righteous overmuch; neither make thyself overwise: why shouldest thou destroy thyself? 17Be not overmuch wicked, neither be thou foolish: why shouldest thou die before thy time? 18It is good that thou shouldest take hold of this; yea, also from that withdraw not thy hand: for he that feareth God shall come forth from them all.

19Wisdom is a strength to the wise man more than ten rulers that are in a city. 20Surely there is not a righteous man upon earth, that doeth good, and sinneth not. 21Also take not heed unto all words that are spoken, lest thou hear thy servant curse thee; 22for oftentimes also thine own heart knoweth that thou thyself likewise hast cursed others.

23All this have I proved in wisdom: I said, I will be wise; but it was far from me. 24That which is, is far off and exceeding deep; who can find it out?