Gen 17:11

“ונמלתם AND YE SHALL CIRCUMCISE — This word, in spite of the נ in it, is not Niphal but the same as ומלתם and the נ in it is an addition to the root, which only sometimes appears in it, as, for example, the נ of נושך and of ונמלתם ;(נושא is Kal like ונשאתם “and ye shall carry” (Genesis 45:19), but יִמּוֹל (Genesis 17:12 and Genesis 17:13) is a Niphal form — “shall be circumcised” — like יֵעָשֶׂה “it shall be done”, and יֵאָכֵל “it shall be eaten”.”

“And ye shall circumcise the flesh of your foreskin,.... Or "the foreskin of your flesh" (u); by an hypallage (v), the manner in which this was performed may be seen in the Jewish writers (w), as well as the cure of the wound made, is particularly described by Leo Modena (x), and which when performed, they used to provide a dish full of sand to put the foreskin into; which was done, as Buxtorf (y) relates, to show that their seed should be as the sand of the sea, and to call to mind what Balaam said of them, Num 23:10; and with respect to the old serpent that deceived man, whose food is the dust of the earth, Gen 3:14, the instrument with which this operation was performed, according to the Jewish canons, was as follows (z),"they may circumcise with anything, with a flint, or with glass, and with anything that cuts, excepting with a cane or reed, because of danger; but it is best to circumcise with an iron instrument, either with a knife or a razor; all Israelites use a knife.''The persons who might perform it, according to their rules, are these;"all are fit to circumcise (says Maimonides (a)), even an uncircumcised person, and a servant, and a woman, and a little one may circumcise where there is no man, but a Gentile may not circumcise at all; and if he does circumcise, there is no need to repeat it, and to circumcise a second time.''It is a little differently expressed by another (b) writer of theirs,"all are fit to circumcise, even a servant, a woman, and a little one, and an uncircumcised Israelite, whose brethren died through circumcision; but it there is an Israelite grown, and knows how to circumcise, he is to be preferred before them all; (some say a woman may not circumcise;) but an idolater, though he is circumcised, may not circumcise at all; but if he does, there is no need to repeat it, and to circumcise else a second time:" and it shall be a token of the covenant betwixt me and you: of the promise of God to Abraham, that he should be the father of many nations. The apostle explains it, Rom 4:11; to be a seal, or what gave assurance to Abraham, or was a sure token to him, that righteousness would be wrought out by Christ, by his obedience, and the shedding of his blood, which is received by faith; and that this was imputed to him while he was uncircumcised, Gen 15:6; and that this also would "be in the uncircumcision", or uncircumcised Gentiles that should believe as he did, and be imputed to them, as to him, and so he would appear to be the father of them all. Moreover, this was a sign or token of that part of the promise or covenant, which gave to his seed the land of Canaan: this was a seal of the lease of that land, which was made while Abraham was in it, and which the Israelites were obliged to submit to, upon entrance into it in Joshua's time, as a token of it; and which they were to observe while in it until the Messiah's coming, and by which they were distinguished from other nations, and kept a distinct nation, that it might appear he came of them: and to use the words of Tacitus (c), this rite was instituted "ut diversitate noscantur", that they might be distinguished and known from others; it was typical of Christ, the end of it, who submitted to it, that it might appear he was really man, a son of Abraham, and a minister of the circumcision, and was made under the law, and so laid under obligation to fulfil it; and that he was to satisfy for the sins of men by the effusion of his blood, and endure pains and sufferings, signified thereby: it was also an emblem of spiritual circumcision, or circumcision of the heart, which ties in the putting off the body of sin, in renouncing man's own righteousness, and in his being by the grace of God, and blood of Christ, cleansed from the impurity of his nature, propagated by carnal generation, in which the member circumcised has a principal concern. (u) "praeputium carnis vestrae", Drusius, Piscator. (v) According to E. W. Bullinger, "hypallage" "relates to an interchange of construction whereby an adjective or other word, which `logically' belongs to one connection, is grammatically united with another, so that what is said or attributed to one things ought to be said or attributed to another". (w) Maimon. Hilchot Milah, c. 2. sect 2. Schulchan Aruch, par. 2. Jore Dea Hilchot Milah, c. 264. sect. 3. (x) History of the present Jews, part 4. c. 8. p. 206. (y) Synagog. Jud. c. 4. p. 104, 105. (z) Maimon. ib. c. 2. sect. 1. Schulchan Aruch, ib. sect. 2. (a) Maimon. ib. Schulchan Aruch, ib. sect. l. (b) Schulchan Aruch, ib sect 1. (c) Hist. l. 5. c. 5.”

“And it shall be a token - לאות leoth, for a sign of spiritual things; for the circumcision made in the flesh was designed to signify the purification of the heart from all unrighteousness, as God particularly showed in the law itself. See Deu 10:16; see also Rom 2:25-29;Col 2:11. And it was a seal of that righteousness or justification that comes by faith, Rom 4:11. That some of the Jews had a just notion of its spiritual intention, is plain from many passages in the Chaldee paraphrases and in the Jewish writers. I borrow one passage from the book Zohar, quoted by Ainsworth: "At what time a man is sealed with this holy seal, (of circumcision), thenceforth he seeth the holy blessed God properly, and the holy soul is united to him. If he be not worthy, and keepeth not this sign, what is written? By the breath of God they perish, (Job 4:9), because this seal of the holy blessed God was not kept. But if he be worthy, and keep it, the Holy Ghost is not separated from him."”

“You shall, either by yourselves, or by the ministry of others, with respect to infants. That part of the body was chosen, because the effects of sin first appeared there; and because a part of the Hebrews’ creed was, that Christ should be born of the family of Abraham. — A sign that Abraham had agreed to the covenant with God, and to be a memorial of his faith and justice, Romans iv. 2; to distinguish also the faithful from infidels; to purge away original sin in male children, eight days old; and to be a figure of baptism. (Menochius) (Tirinus) — God always appoints some sign of his covenants, as Jesus Christ instituted the holy sacrament of his body and blood, under exterior appearances, to assure us of his new alliance with Christians. (Calmet) — The sacraments of the old law caused grace, only by means of faith in the Redeemer, of which they were signs. (St. Augustine, de Nupt. ii. chap. ult.[last chap.]) In this sense, the holy fathers assert, that circumcision remitted original sin to those who could receive it; though some think, it was only a bare sign or distinctive mark of the Jews. (Calmet) — It is far beneath our baptism, which is more easy, general and efficacious; as the Christian sacraments are not like those of Moses, weak and needy elements. (Galatians iv. 9; St. Augustine ep. 158, ad Jan.; Psalm 73, &c.) (Worthington)”