Moreover if your brother shall trespass against you, go and tell him his fault between you and him alone: if he shall hear you…
It is one of the severest tests of friendship to tell your friend of his faults. If you are angry with a man, or hate him, it is not hard to go to him and stab him with words; but so to love a man that you cannot bear to see the stain of sin upon him, and to speak painful truth through loving words — that is friendship. But few have such friends. Our enemies usually teach us what we are at the point of the sword.
(H. W. Beecher.)
Parallel VersesKJV: Moreover if thy brother shall trespass against thee, go and tell him his fault between thee and him alone: if he shall hear thee, thou hast gained thy brother.