Titus 1:13

13Theἡtestimonyμαρτυρίαthisαὕτηisἐστὶνtrueἀληθής.forδι’whichἣνcauseαἰτίανrebukeἔλεγχεthemαὐτοὺςseverelyἀποτόμως,so thatἵναthey may be soundὑγιαίνωσινinἐνtheτῇfaithπίστει,

This testimony is true, through which cause you are to rebuke them severely, so that they may be sound in the faith,