Galatians 3:20
Now a mediator is not of one: but God is one.
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- Vulgate (Clementine)
- Mediator autem unius non est : Deus autem unus est.
- Greek New Testament (SBLGNT)
- ὁ δὲ μεσίτης ἑνὸς οὐκ ἔστιν, ὁ δὲ θεὸς εἷς ἐστιν.
Haydock's commentary
On verses 15 to 21
I speak after the manner of man; or, by a comparison, says St. Chrysostom, common among men. If a man make or execute his last will, or any deed or contract, it stands good; no one contemns it, or pretends to annul it, or add any thing to it: how much more shall the testament, the covenant, or solemn promise which God made to Abraham, to bless all nations, stand firm and have its effect? And he said to his seed, to one, i.e. in Christ only, not to his seeds, as it were by many. It is observed, that the word seed being a collective signification, may grammatically be taken for the plural as well as for the singular number; so that we are to have more regard to St. Paul's authority, who expounds to us what is here signified by the word seed, than to the word itself.
The law which was made after four hundred and thirty years (consult the chronologists) does not make void the testament: nor the promise which God himself made to Abraham, that mankind should be blessed only by Christ. These blessings could not be by the law of Moses ordained, or delivered by angels in the hand of a mediator, to wit, of Moses, according to the common interpretation, who, in receiving and publishing the law, was as it were a mediator betwixt God and his people.
And a mediator is not of one, (but is called so, as mediating betwixt two parties) but God is one. This is to signify, that when he made the covenant or promise to Abraham, he made this promise himself, and did not make use of a mediator inferior to himself, as when he gave the law; and the law, in this respect, was inferior to the promise; but the chief difference was, that true justice and sanctification was not given by the law, for so it would have contradicted and have made void the promise made before to Moses[Abraham?], that the blessings of true sanctification should only be by his seed and by faith in Christ, the Son of Abraham and of David. According to the Scriptures all things (i.e. all men) were shut up together under sin, under the slavery of sin, from which they were not to be redeemed but by the accomplishment of the promise, and by the coming of Christ, by his grace, and faith in him. (Witham)
Read on
Because of transgressions. To restrain them from sin, by fear and threats.
Ordained by Angels. The law was delivered by Angels, speaking in the name and person of God to Moses, who was the mediator on this occasion between God and the people. (Challoner)
The law was established not to occasion sin, but to manifest sin, and to punish sin. Ezechiel (xx. 11.) shews the meaning of the apostle, when he says: that God, after bringing the Israelites out of Egypt, imposed laws upon them that gave life to such as observed them. This was the decalogue, published immediately after the passage of the Red Sea; but violating these commandments, they became guilty of idolatry. To punish them, God imposed upon them precepts which are not good, and which give not life. (ver. 24, 25.) This is the ceremonial law, which was established and published by degrees during the forty years the Israelites sojourned in the desert. It is then evident that this law was given to punish transgressions in the Israelites, and to prevent relapses. This is the sense of St. Paul.
From Haydock's Catholic Bible Commentary, 1859, in the transcription made by Todd Easton and kept online by John Paul Wohlschied at johnblood.gitlab.io/haydock.
The Fathers on this verse
Pseudo-Ignatius Epistle to the Antiochians, Chapter IV. Continuation
The Evangelists, too, when they declared that the one Father was “the only true God,” did not omit what concerned our Lord, but wrote: “In the beginning was the Word, and the Word was with God, and the Word was God. The same was in the beginning with God. All things were made by Him, and without Him was not anything made that was made.” And concerning the incarnation: “The Word,” says [the Scripture], “became flesh, and dwelt among us.” And again: “The book of the generation of Jesus Christ, the son of David, the son of Abraham.” And those very apostles, who said “that there is one God,” said also that “there is one Mediator between God and men.” Nor were they ashamed of the incarnation and the passion. For what says [one]? “The man Christ Jesus, who gave Himself” for the life and salvation of the world.
St Hippolytus On Numbers
Now, in order that He might be shown to have together in Himself at once the nature of God and that of man, as the apostle, too, says: “Mediator between God and men, the man Christ Jesus. Now a mediator is not of one man, but two,”, it was therefore necessary that Christ, in becoming the Mediator between God and men, should receive from both an earnest of some kind, that He might appear as the Mediator between two distinct persons.
Novatian A Treatise of Novatian Concerning the Trinity, Chapter XXX
And now, indeed, concerning the Father, and the Son, and the Holy Spirit, let it be sufficient to have briefly said thus much, and to have laid down these points concisely, without carrying them out in a lengthened argument. For they could be presented more diffusely and continued in a more expanded disputation, since the whole of the Old and New Testaments might be adduced in testimony that thus the true faith stands. But because heretics, ever struggling against the truth, are accustomed to prolong the controversy of pure tradition and Catholic faith, being offended against Christ; because He is, moreover, asserted to be God by the Scriptures also, and this is believed to be so by us; we must rightly, that every heretical calumny may be removed from our faith, contend, concerning the fact that Christ is God also, in such a way as that it may not militate against the truth of Scripture; …
St Augustine On Christian Doctrine, Examples of the Various Styles Drawn from Scripture
39. But now to come to something more definite. We have an example of the calm, subdued style in the Apostle Paul, where he says: “Tell me, ye that desire to be under the law, do ye not hear the law? For it is written, that Abraham had two sons; the one by a bond maid, the other by a free woman. But he who was of the bond woman was born after the flesh; but he of the free woman was by promise. Which things are an allegory: for these are the two covenants; the one from the Mount Sinai, which gendereth to bondage, which is Hagar. For this Hagar is Mount Sinai in Arabia, and answereth to Jerusalem which now is, and is in bondage with her children. But Jerusalem which is above is free, which is the mother of us all;” and so on. …
St Augustine A Treatise on the Merits and Forgiveness of Sins, and on the Baptism of Infants, From the Epistle to the Galatians
Likewise to the Galatians the apostle writes: “Grace be to you, and peace, from God the Father, and from our Lord Jesus Christ, who gave Himself for our sins, that He might deliver us from this present evil world.” While in another passage he says to them: “The law was added because of transgressions, until the seed should come to whom the promise was made; and it was ordained by angels in the hand of a mediator. Now a mediator belongs not to one party; but God is one. Is the law then against the promises of God? God forbid: for if there had been a law given which could have given life, verily righteousness should have been by the law. But the scripture hath concluded all under sin, that the promise by faith of Jesus Christ might be given to them that believe.”
St John Chrysostom The Commentary and Homilies of St. John Chrysostom on Galatians and Ephesians, Galatians 3:1
Ver. 20 . “Now a mediator is not a mediator of one, but God is one.” What can the heretics say to this? for as, according to them, the expression “the Only True God” excludes the Son from being true God, so here the phrase “God is One,” excludes Him from being God in any sense. But if, although the Father is called “One God,” the Son is nevertheless God, it is very plain that though the Father is called “Very God,” the Son is very God likewise. Now a mediator, says he, is between two parties; of whom then is Christ the Mediator? plainly of God and of men. Observe, he says, that Christ also gave the Law; what therefore it was His to give, it is His to annul.
St Gregory of Nyssa Against Eunomius, He thus proceeds to a magnificent discourse of the interpretation of “Mediator,” “Like,” “Ungenerate,” and “generate,” and of “The likeness and seal of the energy of the Almighty and of His Works.”
Again, what is the manifold mediation which with wearying iteration he assigns to God, calling Him “Mediator in doctrines, Mediator in the Law”? It is not thus that we are taught by the lofty utterance of the Apostle, who says that having made void the law of commandments by His own doctrines, He is the mediator between God and man, declaring it by this saying, “There is one God, and one mediator between God and man, the man Christ Jesus;” where by the distinction implied in the word “mediator” he reveals to us the whole aim of the mystery of godliness. Now the aim is this. Humanity once revolted through the malice of the enemy, and, brought into bondage to sin, was also alienated from the true Life. …