But if ye forgive not men their trespasses, neither will your Father forgive your trespasses.

But if you do not let men have forgiveness for their sins, you will not have forgiveness from your Father for your sins.

εαν ομως δεν συγχωρησητε εις τους ανθρωπους τα πταισματα αυτων, ουδε ο Πατηρ σας θελει συγχωρησει τα πταισματα σας.

But if ye forgive not men their trespasses, neither will your Father forgive your trespasses.