Luke 17:4 - Ellicott's Commentary On The Whole Bible

If he trespass against thee. — Better, if he sin. The better MSS. omit the words, “against thee,” and so make the command more general, and the verb is the same as that in Matthew 18:21, the teaching of which is here manifestly reproduced. The outward form seems at first to present a somewhat lower standard of forgiveness, “seven times,” instead of “seventy times seven.” Here, however, it should be remembered that we have “seven times a day,” and the meaning is obviously the same in both passages. No accumulation of offences, however often repeated, is to be allowed to bring us to the hardness which refuses to forgive when the offender says that he repents and asks forgiveness.