But if he will not hear you, then take with you one or two more, that in the mouth of two or three witnesses every word may be established.
Read Chapter 18
Augustine of Hippo
AD 430
If someone has done you injury and you have suffered, what should be done? You have heard the answer already in today’s Scripture: “If your brother sins against you, go and tell him his fault, between you and him alone.” If you fail to do so, you are worse than he is. He has done someone harm, and by doing harm he has stricken himself with a grievous wound. Will you then completely disregard your brother’s wound? Will you simply watch him stumble and fall down? Will you disregard his predicament? If so, you are worse in your silence than he in his abuse. Therefore, when any one sins against us, let us take great care, but not merely for ourselves. For it is a glorious thing to forget injuries. Just set aside your own injury, but do not neglect your brother’s wound. Therefore “go and tell him his fault, between you and him alone,” intent upon his amendment but sparing his sense of shame. For it might happen that through defensiveness he will begin to justify his sin, and so you will hav...
What then, if he should disobey, and be disposed to abide in hardness? Take with yourself yet one or two, that in the mouth of two witnesses every word may be established. For the more he is shameless, and bold, the more ought we to be active for his cure, not in anger and indignation. For the physician in like manner, when he sees the malady obstinate, does not give up nor grow impatient, but then makes the more preparation; which He commands us to do in this case too.