Ecclesiastes 7:19-22 - Wisdom Is Valuable, But No One Is Completely Righteous
19 Wisdom shall strengthen to the wise one more than ten having power which were in the city. 20 For not a just man in the earth, who shall do good and not sin.
21 Also to all the words that shall be spoken thou shalt not give thy heart, that thou shalt not hear thy servant cursing thee. 22 For also many times thy heart knew that thou didst also curse others.