Augustine of Hippo : And this is the blessing with which Moses, the man of God, blessed the children of Israel before they died. And he said: "The Lord has come from Sinai, and it has been shown to us from Seir. It has been hurried from Mount Farán with many thousands of Kadesh. On his right there are angels with him; and he forgave his people; and all the sanctified ones are under your hands and these are under you. And he took from his words the law, which Moses commanded us, inheritance for the assemblies of Jacob. And there will be a prince in the beloved, once the princes of the peoples gathered together with the tribes of Israel. " Do not overlook or neglect this prophecy. It is seen that this blessing refers to the new people, which Christ the Lord sanctified, and from whose person Moses says these things, not from Moses himself. And all this is evident from what is said below. If it is said: The Lord has come from Sinai, because on Mount Sinai the law was given, what does it mean next: And it has been shown to us from Seir, being that Seir is a mount of Idumea, where Did Esau reign? On the other hand, since Moses blesses the children of Israel with these words, as the Scripture predicts, how does Moses say: And he took from his words the law, which Moses commanded us? It is, without a doubt, a prophecy, as we have said, that announces in advance a new people sanctified by the grace of Christ under the name of the children of Israel, because this people is a descendant of Abraham, that is, they are the children of the promise. And it means "seeing God." Therefore, in the Lord, who has come from Sinai, one must see Christ, because Sinai means trial. Christ has come from the test of passion, of the cross, of death. And it has been shown to us since Seír. Seír means "hairy," and designates the sinner. That is how Esau, the abhorred, was born (Cf Genesis 25,25). But as those who were sitting in the darkness and in the shadow of death a light appeared to them (Cf Isaiah 9,2), that is why it appeared from Seir. At the same time, it is not absurd not to understand that it was predicted that the grace of Christ would come to the people of Israel from the Gentiles, meaning by the name of Seir, because it is a mountain belonging to Esau. That is why the Apostle says: So also they did not now believe in the mercy granted to you so that they too may obtain mercy (Rm 11,31). They say: It has been shown to us from Seir and it has been hurried from Mount Farán -from the fruitful mountain, for this means Farán, by which the Church is designated-, with many thousands from Cades. Cades means "changed" and "sanctity." So many thousands have been changed and sanctified by grace. With them Christ came to gather the Israelites later. Then he goes on saying: On his right there are angels with him. This does not need explanation. And he forgave his people, granting them the forgiveness of sins. Then the word returns to that people to say: And all the sanctified are under your hands and they are under you. They are not overbearing, and without wanting to establish their own justice. They recognize the grace to submit to the justice of God (Cf Rm 10,3). Then he says: And he took the law from his words. Who receives it, of course, is the people of whom it was said: He forgave his people. He received, then, from his words the law, which Moses commanded us. His people received the law from his words, because of his teaching he understood the law that Moses commanded us. For Christ himself said in the Gospel: If you believed in Moses, you would also believe in me, for he wrote about me (John 5,46). The Jewish people did not receive a law that they did not understand. He received it when he understood it from his words without the ancient veil and once he converted the people to the Lord. He calls this law inheritance for the assemblies of Jacob. And it is an inheritance, not earthly, but celestial; not temporary, but eternal. And it continues: And there will be a prince in the beloved. The prince, of course, is the Lord Jesus, who will be in the beloved town. Once the princes of the peoples - of the Gentiles - gathered together with the tribes of Israel. And this is to fulfill what was said before: Rejoice, Gentiles, together with his people, because a partial blindness has come upon Israel, until all the Gentiles enter and thus all Israel will be saved. — QUESTIONS ON DEUTERONOMY, Q. 56 (tr. J. Litteral, draft)