17:4 As for me, behold, my covenant [is] with thee, and thou shalt be a {a} father of many nations.
(a) Not only physical descendants, but of a far greater multitude by faith, Ro 4:17.
17:4 The promise is here introduced with solemnity: As for me, saith the Great God, Behold, behold and admire it, behold and be assured of it, my covenant is with thee. And thou shalt be a father of many nations - This implies, That his seed after the flesh should be very numerous, both in Isaac and in Ishmael, and in the sons of Keturah. And the event answered, for there have been, and are, more of the children of men descended from Abraham, than from any one man at equal distance with him from Noah, the common root. That all believers, in every age, should be looked upon as his spiritual seed, as the father of the faithful. In this sense the apostle directs us to understand this promise, Rom 4:16,17. He is the father of those, in every nation, that, by faith, enter into covenant with God, and (as the Jewish writers express it) are gathered under the wings of the divine majesty.
17:1-6 The covenant was to be accomplished in due time. The promised Seed was Christ, and Christians in him. And all who are of faith are blessed with faithful Abram, being partakers of the same covenant blessings. In token of this covenant his name was changed from Abram, a high father, to Abraham, the father of a multitude. All that the Christian world enjoys, it is indebted for to Abraham and his Seed.
