Ambrosiaster : There are some who serve the law to a certain extent without being circumcised; for many Romans in Judea served the law without circumcision.… Yet there is no one who is circumcised without being required to serve the whole law. He is a debtor, since the law was given to the circumcised. His meaning here was that they had become so negligent as to deserve to bear all the burdens of the law. — EPISTLE TO THE Galatians 5.3 Epiphanius of Salamis : When he says "bound," he is no longer speaking of the law as something unworthy but of a heavy burden which can be made lighter. There is one Lord, who is able to make it either heavy or light according to the choice of those who have not refused to accept salvation through his grace through his appearance in the flesh. — PANARION 42.12.3, THIRD REFUTATION OF MARCION Hippolytus of Rome : And certain other (heretics), contentious by nature, (and) wholly uniformed as regards knowledge, as well as in their manner more (than usually) quarrelsome, combine (in maintaining) that Easter should be kept on the fourteenth day of the first month, according to the commandment of the law, on whatever day (of the week) it should occur. (But in this) they only regard what has been written in the law, that he will be accursed who does not so keep (the commandment) as it is enjoined. They do not, however, attend to this (fact), that the legal enactment was made for Jews, who in times to come should kill the real Passover. And this (paschal sacrifice, in its efficacy,) has spread unto the Gentiles, and is discerned by faith, and not now observed in letter (merely). They attend to this one commandment, and do not look unto what has been spoken by the apostle: "For I testify to every man that is circumcised, that he is a debtor to keep the whole law." In other respects, however, these consent to all the traditions delivered to the Church by the Apostles. — Hippolytus Refutation of All Heresies Book VIII Jerome : Just as no one can serve two masters, so it is difficult to keep both the shadow and the substance of the law. — EPISTLE TO THE Galatians 2.5.4 Jerome : (Verse 3.) However, I testify to every man who circumcises himself that he is obligated to keep the entire Law. God, who first commanded circumcision to Abraham and then through Moses in the Law, established not only circumcision but also many other observances: the celebration of feast days in Jerusalem, the offering of burnt sacrifices morning and evening, the sacrifice of the Passover lamb in one designated place, the rest of the land during the seventh year, the fiftieth year of jubilee, and other things that can easily be extracted from the Scriptures by each individual reader. Therefore, we will refute Ebion and his followers, who believe that those who have believed in Christ after the Gospel must be circumcised, so that they may either undergo circumcision and perform the other things that are commanded in the Law; or if it is impossible to do all these things, then let circumcision, which is omitted along with the other ceremonial ordinances, cease. But if they respond that we are only obliged to do what is possible (for God does not require of us what we cannot do, but what we can fulfill), we will tell them that it is not the will of the same God to observe the Law and to abandon those who observe the Law. But how does He make guilty those who, even if they want to, cannot fulfill the whole Law because it has been interrupted? We on the other hand follow the spiritual law, which says: You shall not muzzle an ox when it is treading out the grain (Deut. 25:4), and understand with the Apostle: Does God take care for oxen? (1 Tim. 10:18; 1 Cor. 9:9). But surely He says it for our sake, and to observe the delicate sabbaths (Isa. 58:13), not so that our ox and donkey and other lowly animals may rejoice on the sabbath; but rather for those humans and animals about whom it is written: In your hand is the welfare of humans and animals, O Lord (Ps. 36:7). Reasonable and spiritual men, but also animals, those who are of slower wit, are educated by the spiritual things to observe the Lord's sabbaths. And it is not contrary to what has been said above: If you are circumcised, Christ profits you nothing. And what follows: I testify to every man circumcising himself that he is a debtor to do the whole law, to this that is inferred by us. For the hearers of the law are not justified with God, but the doers of the law will be justified. Because he who is the author of the Law can say, 'We are not circumcision'; and, 'In secret, a Jew'; and we know that the Law is spiritual. But whoever follows the letter that cuts and kills is not a maker of the Law, but truly an enemy of the Law, especially after the Savior's coming, who removes the veil from the hearts of those who turn to him, so that we, beholding the unveiled face, may be transformed from the oldness of the letter into the newness of the spirit. — Commentary on Galatians John Chrysostom : That you may not suppose that this is spoken from ill-will, I say not to you alone, he says, but to every one who receiveth circumcision, that he is a debtor to do the whole Law. The parts of the Law are linked one to the other. As he who from being free has enrolled himself as a slave, no longer does what he pleases, but is bound by all the laws of slavery, so in the case of the Law, if you take upon you a small portion of it, and submit to the yoke, you draw down upon yourself its whole domination. And so it is in a worldly inheritance: he who touches no part of it, is free from all matters which are consequent on the heirship to the deceased, but if he takes a small portion, though not the whole, yet by that part he has rendered himself liable for every thing. And this occurs in the Law, not only in the way I have mentioned, but in another also, for Legal observances are linked together. For example; Circumcision has sacrifice connected with it, and the observance of days; sacrifice again has the observance both of day and of place; place has the details of endless purifications; purifications involve a perfect swarm of manifold observances. For it is unlawful for the unclean to sacrifice, to enter the holy shrines, to do any other such act. Thus the Law introduces many things even by the one commandment. If then thou art circumcised, but not on the eighth day, or on the eighth day, but no sacrifice is offered, or a sacrifice is offered, but not in the prescribed place, or in the prescribed place, but not the accustomed objects, or if the accustomed objects, but thou be unclean, or if clean yet not purified by proper rules, every thing is frustrated. Wherefore he says, "that he is a debtor to the whole Law." Fulfil not a part, but the whole, if the Law is of force; but if it be not of force, not even a part. — Homily on Galatians 5 Oecumenius : "that he is a debtor to do the whole law." Against the statement, he says, that no longer does one receive anything from Christ, which is more grievous than ten thousand Gehennas. And such persons lay upon themselves a useless burden. For he who keeps the law in one point will be compelled to keep it in all things, since all will fail. What, then, is weightier than the observances of the law? — Commentary on Galatians