But if you forgive not men their trespasses, neither will your Father forgive your trespasses.
All Commentaries on Matthew 6:15 Go To Matthew 6
Augustine of Hippo
AD 430
Serm. in Mont., ii, 11: Here we should not overlook that of all the petitions enjoined by the Lord, He judged that most worthy of further enforcement, which relates to forgiveness of sins, in which He would have us merciful; which is the only means of escaping misery.
Enchir., 74: Whoever does not forgive him that in true sorrow seeks forgiveness, let him not suppose that his sins are by any means forgiven of the Lord.