Theophylact of Ohrid — as excerpted in the Catena Aurea on Luke 17:3-4

“But some one may well ask, If when I have several times forgiven my brother he again trespass against me, what must I do with him? In answer therefore to this question He adds, And if he trespass against thee seven times in a day, and seven times in a day turn again to thee, saying, I repent; forgive him.”