Commentary on the Epistle to the Romans John Calvin
John Calvin found. On this account Paul denies here that all the children of Abraham were the children of God, though a covenant had been made with them by the Lord, for few continued in the faith of the covenant; and yet God himself testifies, in the sixth chapter of Ezekiel, that they were all regarded by him as children. In short, when a whole people are called the heritage and the peculiar people of God, what is meant is, that they have been chosen by the Lord, the promise of salvation having been offered them and confirmed by the symbol of circumcision; but as many by their ingratitude reject this adoption, and thus enjoy in no degree its benefits, there arises among them another difference with regard to the fulfilment of the promise. That it might not then appear strange to any one, that this fulfilment of the promise was not evident in many of the Jews, Paul denies that they were included in the true election of God.
Some may prefer such a statement as this, — "The general election of the people of Israel is no hinderance, that God should not from them choose by his hidden counsel those whom he pleases." It is indeed an illustrious example of gratuitous mercy, when God deigns to make a covenant of life with a nation: but his hidden favor appears more evident in that second election, which is confined to a part only.
But when he says, that all who are of Israel are not Israelites, and that all who are of the seed of Abraham are not children, it is a kind of change in the meaning of words, ({παρονομασία}); for in the first clause he includes the whole race, in the second he refers only to true sons, who were not become degenerated.
7. But, "In Isaac shall thy seed be called." Paul mentions this, to show that the hidden election of God overrules the outward calling, and that it is yet by no means inconsistent with it, but, on the contrary, that it tends to its confirmation and completion. That he might then in due order prove both, he in the first place assumes, that the election of God is not tied to the natural descendants of Abraham, and that it is not a thing that is included in the conditions of the covenant: and this is what he now confirms by a most suitable example. For if there ought to have been any natural progeny, which fell not away from the covenant; this ought to have been especially the case with those who obtained the privilege at first: but when we find, that of the first sons of Abraham, while he was yet alive, and the promise new, one of them was separated as the seed, how much more might the same thing have taken place in his distant posterity? Now this testimony is taken from Genesis 17:20, where the Lord gives an answer to Abraham, that he had heard his prayer for Ishmael, but that there would be another on whom the promised blessing would rest. It hence follows, that some men are by special privilege elected out of the chosen people, in whom the common adoption becomes efficacious and valid.
8. That is, They are not, etc. He now gathers from God's answer a proposition, which includes the whole of what he had in view. For if Isaac, and not Ishmael, was the seed, though the one as well as the other was Abraham's son, it must be that all natural sons are not to be regarded as the seed, but that the