Genesis 17:9
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And God said unto Abraham, Thou shalt keep my covenant therefore, thou, and thy seed after thee in their generations.

Genesis 17 Commentaries: BarnesCalvinClarkeDarbyGillGenevaGuzikJFBKeil / DelitzschKJV Translators'Henry's ConciseMatthew HenryScofieldTSKWesley
Barnes' Notes on the Bible

The sign of the covenant. "And thou." The other party to the covenant now learns his obligation. "Every male of you shall be circumcised." Circumcision, as the rainbow, might have been in existence before it was adopted as the token of a covenant. The sign of the covenant with Noah was a purely natural phenomenon, and therefore entirely independent of man. That of the Abrahamic covenant was an artificial process, and therefore, though prescribed by God, was dependent on the voluntary agency of man. The former marked the sovereignty of God in ratifying the covenant and insuring its fulfillment, notwithstanding the mutability of man; the latter indicates the responsibility of man, the trust he places in the word of promise, and the assent he gives to the terms of the divine mercy. As the former covenant conveys a common natural blessing to all mankind and contemplates a common spiritual blessing, so the latter conveys a special spiritual blessing and contemplates its universal acceptance. The rainbow was the appropriate natural emblem of preservation from a flood; and the removal of the foreskin was the fit symbol of that removal of the old man and renewal of nature, which qualified Abraham to be the parent of a holy seed. And as the former sign foreshadows an incorruptible inheritance, so the latter prepares the way for a holy seed, by which the holiness and the heritage will at length be universally extended.

It is worthy of remark that in circumcision, after Abraham himself, the parent is the voluntary imponent, and the child merely the passive recipient of the sign of the covenant. Hereby is taught the lesson of parental responsibility and parental hope. This is the first formal step in a godly education, in which the parent acknowledges his obligation to perform all the rest. It is also, on the command of God, the formal admission of the believing parents' offspring into the privileges of the covenant, and therefore cheers the heart of the parent in entering upon the parental task. This admission cannot be reversed but by the deliberate rebellion of the child.

Still further, the sign of the covenant is to be applied to every male in the household of Abraham. This indicates that the servant or serf stands in the relation of a child to his master or owner, who is therefore accountable for the soul of his serf, as for that of his son. It points out the applicability of the covenant to others, as well as the children of Abraham, and therefore its capability of universal extension when the fulness of time should come. It also intimates the very plain but very often forgotten truth, that our obligation to obey God is not cancelled by our unwillingness. The serf is bound to have his child circumcised as long as God requires it, though he may be unwilling to comply with the divine commandments.


Gill's Exposition of the Entire Bible

And God said unto Abraham, thou shalt keep my covenant therefore,.... Observe the sign or token of it, circumcision, in the manner after related:

thou, and thy seed after thee, in their generations; in successive ages until the Messiah come, the end of the law for righteousness.


Keil and Delitzsch Biblical Commentary on the Old Testament

On the part of Abraham (ואתּה thou, the antithesis to אני, as for me, Genesis 17:4) God required that he and his descendants in all generations should keep the covenant, and that as a sign he should circumcise himself and every male in his house. המּול Niph. of מוּל, and נמלתּם perf. Niph. for נמלּתם, from מלל equals מוּל. As the sign of the covenant, circumcision is called in Genesis 17:13, "the covenant in the flesh," so far as the nature of the covenant was manifested in the flesh. It was to be extended not only to the seed, the lineal descendants of Abraham, but to all the males in his house, even to every foreign slave not belonging to the seed of Abram, whether born in the house or acquired (i.e., bought) with money, and to the "son of eight days," i.e., the male child eight days old; with the threat that the uncircumcised should be exterminated from his people, because by neglecting circumcision he had broken the covenant with God. The form of speech ההיא הנּפשׁ נכרתה, by which many of the laws are enforced (cf. Exodus 12:15, Exodus 12:19; Leviticus 7:20-21, Leviticus 7:25, etc.), denotes not rejection from the nation, or banishment, but death, whether by a direct judgment from God, an untimely death at the hand of God, or by the punishment of death inflicted by the congregation or the magistrates, and that whether יוּמת מות is added, as in Exodus 31:14, etc., or not. This is very evident from Leviticus 17:9-10, where the extermination to be effected by the authorities is distinguished from that to be executed by God Himself (see my biblische Archologie ii. 153, 1). In this sense we sometimes find, in the place of the earlier expression "from his people," i.e., his nation, such expressions as "from among his people" (Leviticus 17:4, Leviticus 17:10; Numbers 15:30), "from Israel" (Exodus 12:15; Numbers 19:13), "from the congregation of Israel" (Exodus 12:19); and instead of "that soul," in Leviticus 17:4, Leviticus 17:9 (cf. Exodus 30:33, Exodus 30:38), we find "that man."


Geneva Study Bible

And God said unto Abraham, Thou shalt keep my covenant therefore, thou, and thy seed after thee in their generations.


Matthew Henry's Concise Commentary

17:7-14 The covenant of grace is from everlasting in the counsels of it, and to everlasting in the consequences of it. The token of the covenant was circumcision. It is here said to be the covenant which Abraham and his seed must keep. Those who will have the Lord to be to them a God, must resolve to be to him a people. Not only Abraham and Isaac, and his posterity by Isaac, were to be circumcised, but also Ishmael and the bond-servants. It sealed not only the covenant of the land of Canaan to Isaac's posterity, but of heaven, through Christ, to the whole church of God. The outward sign is for the visible church; the inward seal of the Spirit is peculiar to those whom God knows to be believers, and he alone can know them. The religious observance of this institution was required, under a very severe penalty. It is dangerous to make light of Divine institutions, and to live in the neglect of them. The covenant in question was one that involved great blessings for the world in all future ages. Even the blessedness of Abraham himself, and all the rewards conferred upon him, were for Christ's sake. Abraham was justified, as we have seen, not by his own righteousness, but by faith in the promised Messiah.


Matthew Henry's Whole Bible Commentary

Verses 7-14

Here is, I. The continuance of the covenant, intimated in three things:-1. It is established; not to be altered nor revoked. It is fixed, it is ratified, it is made as firm as the divine power and truth can make it. 2. It is entailed; it is a covenant, not with Abraham only (then it would die with him), but with his seed after him, not only his seed after the flesh, but his spiritual seed. 3. It is everlasting in the evangelical sense and meaning of it. The covenant of grace is everlasting. It is from everlasting in the counsels of it, and to everlasting in the consequences of it; and the external administration of it is transmitted with the seal of it to the seed of believers, and the internal administration of it by the Spirit of Christ's seed in every age.

II. The contents of the covenant: it is a covenant of promises, exceedingly great and precious promises. Here are two which indeed are all-sufficient:-1. That God would be their God, v. 7, 8. All the privileges of the covenant, all its joys and all its hopes, are summed up in this. A man needs desire no more than this to make him happy. What God is himself, that he will be to his people: his wisdom theirs, to guide and counsel them; his power theirs, to protect and support them; his goodness theirs, to supply and comfort them. What faithful worshippers can expect from the God they serve believers shall find in God as theirs. This is enough, yet not all. 2. That Canaan should be their everlasting possession, v. 8. God had before promised this land to Abraham and his seed, ch. 15:18. But here, where it is promised for an everlasting possession, surely it must be looked upon as a type of heaven's happiness, that everlasting rest which remains for the people of God, Heb. 4:9. This is that better country to which Abraham had an eye, and the grant of which was that which answered to the vast extent and compass of that promise, that God would be to them a God; so that, if God had not prepared and designed this, he would have been ashamed to be called their God, Heb. 11:16. As the land of Canaan was secured to the seed of Abraham according to the flesh, so heaven is secured to all his spiritual seed, by a covenant, and for a possession, truly everlasting. The offer of this eternal life is made in the word, and confirmed by the sacraments, to all that are under the external administration of the covenant; and the earnest of it is given to all believers, Eph. 1:14. Canaan is here said to be the land wherein Abraham was a stranger; and the heavenly Canaan is a land to which we are strangers, for it does not yet appear what we shall be.

III. The token of the covenant, and that is circumcision, for the sake of which the covenant is itself called the covenant of circumcision, Acts 7:8. It is here said to be the covenant which Abraham and his seed must keep, as a copy or counterpart, v. 9, 10. It is called a sign and seal (Rom. 4:11), for it was, 1. A confirmation to Abraham and his seed of those promises which were God's part of the covenant, assuring them that they should be fulfilled, that in due time Canaan would be theirs: and the continuance of this ordinance, after Canaan was theirs, intimates that these promises looked further to another Canaan, which they must still be in expectation of. See Heb. 4:8. 2. An obligation upon Abraham and his seed to that duty which was their port of the covenant; not only to the duty of accepting the covenant and consenting to it, and putting away the corruption of the flesh (which were more immediately and primarily signified by circumcision), but, in general, to the observance of all God's commands, as they should at any time hereafter be intimated and made known to them; for circumcision made men debtors to do the whole law, Gal. 5:3. Those who will have God to be to them a God must consent and resolve to be to him a people. Now, (1.) Circumcision was a bloody ordinance; for all things by the law were purged with blood, Heb. 9:22. See Ex. 24:8. But, the blood of Christ being shed, all bloody ordinances are now abolished; circumcision therefore gives way to baptism. (2.) It was peculiar to the males, though the women were also included in the covenant, for the man is the head of the woman. In our kingdom, the oath of allegiance is required only from men. Some think that the blood of the males only was shed in circumcision because respect was had in it to Jesus Christ and his blood. (3.) It was the flesh of the foreskin that was to be cut off, because it is by ordinary generation that sin is propagated, and with an eye to the promised seed, who was to come from the loins of Abraham. Christ having not yet offered himself to us, God would have man to enter into covenant by the offering of some part of his own body, and no part could be better spared. It is a secret part of the body; for the true circumcision is that of the heat: this honour God put upon an uncomely part, 1 Co. 12:23, 24. (4.) The ordinance was to be administered to children when they were eight days old, and not sooner, that they might gather some strength, to be able to undergo the pain of it, and that at least one sabbath might pass over them. (5.) The children of the strangers, of whom the master of the family was the true domestic owner, were to be circumcised (v. 12, 13), which looked favourable upon the Gentiles, who should in due time be brought into the family of Abraham, by faith. See Gal. 3:14. (6.) The religious observance of this institution was required under a very severe penalty, v. 14. The contempt of circumcision was a contempt of the covenant; if the parents did not circumcise their children, it was at their peril, as in the case of Moses, Ex. 4:24, 25. With respect to those that were not circumcised in their infancy, if, when they grew up, they did not themselves come under this ordinance, God would surely reckon with them. If they cut not off the flesh of their foreskin, God would cut them off from their people. It is a dangerous thing to make light of divine institutions, and to live in the neglect of them.