Augustine of Hippo : Because it is they, not Christ, who are injured, he adds: "you have fallen from grace." For when the effect of Christ's grace is that those who were debtors to the works of the law were freed from this debt, these people, ungrateful to such great grace, prefer to be debtors to the whole law. Now this had not yet happened, but, because the will had begun to be moved, he therefore speaks frequently as though it had already happened. — EPISTLE TO THE Galatians 42 [1B.5.4-12] Augustine of Hippo : He is refuting those who believed that they were justified in the law, not those who observed its legitimate provisions in honor of him by whom they were commanded, understanding both that they were commanded as a foreshadowing of the truth and that they belonged to a particular time. — LETTERS 82.19.3 Gaius Marius Victorinus : All the virtue of the one who believes in Christ is by the grace of God. Grace is not from merits but from readiness to believe God. Therefore [Paul writes] "You have already fallen from grace if you place your justification in the law, because (for example) you serve works, because you observe the sabbath or on account of your circumcision. If you believe that you are justified by this, "you have fallen from grace and been made void of Christ." You no longer have your faith from Christ nor hope for grace for yourselves from his passion and resurrection, if you believe that justification comes from the law." — EPISTLE TO THE Galatians 2.5.4 Jerome : (Verse 4) You have fallen away from Christ: you who are justified by the Law have fallen from grace. Just as no one can serve two masters (Matt. 6), so it is difficult to fulfill both the shadow and the truth of the Law. The shadow is in the old Law, until the day dawns and the shadows are removed; the truth is in the Gospel of Christ. For grace and truth came through Jesus Christ (John 1:17). Therefore, anyone who thinks they can be justified by observing the Law loses the grace of Christ and loses the Gospel they held. And when they lose grace, they are deprived of faith in Christ and rely on their own works. For you have been severed from Christ (κατηργήθητε), not as it has been falsely interpreted in Latin as 'Evacuati estis a Christo', but in Christ's words. By [not adhering to] Christ's work, it is understood more clearly that what he had commanded above all about circumcision, saying: if you are circumcised, Christ profits you nothing, now he comprehends generally about the whole Law, that those who believe themselves to be justified in any observance of the Law do not profit in Christ's work. — Commentary on Galatians John Chrysostom : 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. — Homily on Galatians 5 Oecumenius : "You are cut off from Christ." You have been severed, you have fallen away from him; all things pertaining to Christ and his grace are now useless to you. "you who would be justified by the law." Instead of saying, "you are eager to be justified," he said something like this. You who are zealous to be justified by the law have fallen away from grace, and from the law you will not be justified. — Commentary on Galatians