Christ is become of no effect unto you, whosoever of you are justified by the law; you are fallen from grace.
All Commentaries on Galatians 5:4 Go To Galatians 5
John Chrysostom
AD 407
Having established his point, he at length declares their danger of the severest punishment. When a man recurs to the Law, which cannot save him, and falls from grace, what remains but an inexorable retribution, the Law being powerless, and grace rejecting him?
Thus having aggravated their alarm, and disquieted their mind, and shown them all the shipwreck they were about to suffer, he opens to them the haven of grace which was near at hand. This is ever his wont, and he shows that in this quarter salvation is easy and secure,