Not suffer sin upon him - Rather, not hear sin on his account; that is, either by bearing secret ill-will Ephesians 4:26, or by encouraging him to sin in withholding due rebuke Romans 1:32.
Related Commentaries of Leviticus 19:17
Leviticus 19:17
17 Thou shalt not hate thy brother in thine heart: thou shalt in any wise rebuke thy neighbour, and not suffer sin upon him.