2 Corinthians 10:18

18Notοὐforγὰρthe [one]ὁhimselfἑαυτὸνcommendingσυνιστάνων,this [one]ἐκεῖνόςisἐστινapprovedδόκιμος,butἀλλὰthe one whomὃνtheὁLordκύριοςcommendsσυνίστησιν.

For the one commending himself, that one is not approved, but the one whom the Lord commends.