Ecclesiastes 7:16 in the World English Bible
Don’t be overly righteous, neither make yourself overly wise. Why should you destroy yourself?
Context
15 All things have I seen in the days of my vanity: there is a just man that perisheth in his righteousness, and there is a wicked man that prolongeth his life in his wickedness.
16 Be not righteous over much; neither make thyself over wise: why shouldest thou destroy thyself?
17 Be not over much wicked, neither be thou foolish: why shouldest thou die before thy time?