Ecclesiastes 7:19-22 - Wisdom Is Valuable, But No One Is Completely Righteous
19 Wisdom, bringeth more strength to a wise man, than ten heroes, that are in the city. 20 For, as for men, there is none righteous in the earth, that doeth good, and sinneth not.
21 Moreover, not to all the words which men speak, do thou apply thy heart, - lest thou hear thine own servant reviling thee! 22 For truly, many times, thy heart knoweth, - that, even thou thyself, hast reviled others.