16. Now to Abraham, and his seed. Before pursuing his argument, he introduces an observation about the substance of the covenant, that it rests on Christ alone. But if Christ be the foundation of the bargain, it follows that it is of free grace; and this too is the meaning of the word promise. As the law has respect to men and to their works, so the promise has respect to the grace of God and to faith.
He saith not, And to seeds. To prove that in this place God speaks of Christ, he calls attention to the singular number as denoting some particular seed. I have often been astonished that Christians, when they saw this passage so perversely tortured by the Jews, did not make a more determined resistance; for all pass it slightly as if it were an indisputed territory. And yet there is much plausibility in their objection. Since the word seed is a collective noun, Paul appears to reason inconclusively, when he contends that a single individual is denoted by this word, under which all the descendants of Abraham are comprehended in a passage already quoted, “In multiplying I will multiply thy seed, זרע ( zerang,) or זרעך ( zargnacha,) as the stars of the heaven, and as the sand which is upon the sea-shore.” (Genesis 22:17.) Having, as they imagine, detected the fallacy of the argument, they treat us with haughty triumph.
I am the more surprised that our own writers should have been silent on this head, as we have abundant means of repelling their slander. Among Abraham’s own sons a division began, for one of the sons was cut off from the family. “In Isaac shall thy seed be called.” (Genesis 21:12.) Consequently Ishmael is not included in the reckoning. Let us come a step lower. Do the Jews allow that the posterity of Esau are the blessed seed? nay, it will be maintained that their father, though the first-born, was struck off. And how many nations have sprung from the stock of Abraham who have no share in this “calling?” The twelve patriarchs, at length, formed twelve heads, not because they were descended from the line of Abraham, but because they had been appointed by a particular election of God. Since the ten tribes were carried away, (Hosea 9:17,) how many thousands have so degenerated that they no longer hold a name among the seed of Abraham? Lastly, a trial was made of the tribe of Judah, that the real succession to the blessing might be transmitted among a small people. And this had been predicted by Isaiah,
“Though thy people Israel be as the sand of the sea, yet a remnant of them shall return.” (Isaiah 10:22.)
Hitherto I have said nothing which the Jews themselves do not acknowledge. Let them answer me then; how comes it that the thirteen tribes sprung from the twelve patriarchs were the seed of Abraham, in preference to Ishmaelites and Edomites? Why do they exclusively glory in that name, and set aside the others as a spurious seed? They will, no doubt, boast that they have obtained it by their own merit; but Scripture, on the contrary, asserts that all depends on the calling of God; for we must constantly return to the privilege conveyed in these words, “In Isaac shall thy seed be called.” (Genesis 21:12.) The uninterrupted succession to this privilege must have been in force until Christ; for, in the person of David, the Lord afterwards brought back by recovery, as we might say, the promise which had been made to Abraham. In proving, therefore, that this prediction applies to a single individual, Paul does not make his argument rest on the use of the singular number. He merely shews that the word seed must denote one who was not only descended from Abraham according to the flesh, but had been likewise appointed for this purpose by the calling of God. If the Jews deny this, they will only make themselves ridiculous by their obstinacy.
But as Paul likewise argues from these words, that a covenant had been made in Christ, or to Christ, let us inquire into the force of that expression,
“In thy seed shall all the nations of the earth be blessed.” (Genesis 22:18.)
The Jews taunt the apostle with making a comparison, as if the seed of Abraham were to be quoted as an example in all disastrous omens and prayers; while, on the contrary, to curse in Sodom or Israel is to employ the name of Sodom or Israel in forms of cursing. This, I own, is sometimes the case, but not always; for to bless one’s self in God has quite a different meaning, as the Jews themselves admit. Since, therefore, the phrase is ambiguous, denoting sometimes a cause and sometimes a comparison, wherever, it occurs, it must be explained by the context. We have ascertained, then, that we are all cursed by nature, and that the blessing of Abraham has been promised to all nations. Do all indiscriminately reach it? Certainly not, but those only who are “gathered” (Isaiah 66:8) to the Messiah; for when, under His government and direction, they are collected into one body, they then become one people. Whoever then, laying disputing aside, shall inquire into the truth, will readily acknowledge that the words here signify not a mere comparison but a cause; and hence it follows that Paul had good ground for saying, that the covenant was made in Christ, or in reference to Christ.