Genesis 17
The Covenant of Circumcision 1–8
The Sign of the Covenant: Circumcision 9–14
Sarah and the Promise of Isaac 15–22
Abraham Obeys Immediately 23–27
Bible text: American Standard Version (1901) · Public domain
Study Notes for Genesis 17
Verse 1
I am the Almighty God — El Shaddai, the first 'Almighty' in the Bible, the name by which the LORD says he 'appeared unto Abraham, unto Isaac, and unto Jacob' (Ex 6:3). 'Perfect' (tamim, whole, complete) is the word given to Noah, 'perfect in his generations' (Gen 6:9). Abram is ninety-nine, thirteen years after Gen 16:16.
Verse 5
Abraham — The verse explains the name: 'a father of many nations have I made thee'. 'Many' is hamon, a multitude or crowd. It is said while Sarah is still childless, and Paul quotes the line in Rom 4:17. Neh 9:7 recalls that the LORD 'gavest him the name of Abraham'.
Verse 7
an everlasting covenant — 'Establish' is qum, the verb of the covenant with Noah, 'with thee will I establish my covenant' (Gen 6:18); 'everlasting' (olam) is the word of Gen 9:16. 'To be a God unto thee' returns as the formula of Ex 6:7, 'I will be to you a God', and Jer 31:33, 'will be their God, and they shall be my people'.
Verse 8
the land wherein thou art a stranger — 'Stranger' is from magur, a temporary dwelling, the word used of Jacob and Esau in Gen 36:7. 'Possession' is achuzzah, something held. Stephen says God 'gave him none inheritance in it … yet he promised that he would give it to him for a possession' (Acts 7:5); Heb 11:9 has 'as in a strange country'.
Verse 9
Thou shalt keep my covenant — Shamar, to guard or keep, is said of Abraham and his seed 'in their generations'; v.10 states what is to be kept. Abraham's own keeping is told later: 'Abraham obeyed my voice, and kept my charge, my commandments, my statutes, and my laws' (Gen 26:5). 'Therefore' joins the command to the promises of vv.4–8.
Verse 10
Every man child among you shall be circumcised — Mul is to cut off, to circumcise. The sign is called the covenant itself, 'This is my covenant', and v.11 names it 'a token of the covenant'. Stephen calls it 'the covenant of circumcision' (Acts 7:8), and Paul says Abraham received it as 'a seal of the righteousness of the faith' (Rom 4:11).
Verse 12
he that is eight days old — The eighth day is fixed here, repeated in Lev 12:3, and kept for Isaac (Gen 21:4), for Jesus (Luke 2:21) and for Paul (Phil 3:5). The rite reaches the whole household: 'he that is born in the house, or bought with money of any stranger, which is not of thy seed', and v.13 says it 'must needs' be done.
Verse 14
cut off from his people — The verb karath is the one in the phrase to 'cut' a covenant (Gen 15:18): the one who will not bear the covenant's mark is himself cut off. 'Soul' (nephesh) is the person. 'Broken' is parar, to violate or make void; the uncircumcised 'hath broken my covenant'.
Verse 15
Sarah shall her name be — The name changes from Sarai to Sarah, and v.16 says why: 'I will bless her … she shall be a mother of nations; kings of people shall be of her.' The word sarah is a title, 'princess' or lady (H8282). The new name comes with the promise of a son (v.16).
Verse 17
Abraham fell upon his face, and laughed — The verb is tsachaq, the root of the name Isaac (Yitschaq, 'laughter', v.19). He had fallen on his face when God spoke before (v.3). Paul says of this promise, with Abraham 'about an hundred years old', that 'he staggered not at the promise of God through unbelief; but was strong in faith' (Rom 4:19–20).
Verse 18
O that Ishmael might live before thee — Chayah, to live. The answer comes in two parts: Sarah's son is named Isaac and the covenant is established 'with him' (v.19), and 'as for Ishmael, I have heard thee' (v.20). Ishmael is thirteen (v.25), the son Abraham has had since Gen 16:15–16.
Verse 19
thou shalt call his name Isaac — Yitschaq means 'laughter', from the verb of v.17. The covenant is established 'with him', and so 'in Isaac shall thy seed be called' (Gen 21:12; Rom 9:7). He is born 'at the set time of which God had spoken' (Gen 21:2); Sarah says, 'God hath made me to laugh' (Gen 21:6).
Verse 20
twelve princes shall he beget — 'I have heard thee' (shama) gives the sense of the name Ishmael, 'God will hear' (Gen 16:11). 'Princes' (nasi) are chiefs, and Gen 25:16 lists his sons as 'twelve princes according to their nations'. The promise of 'a great nation' returns to Hagar in Gen 21:18.
Verse 23
in the selfsame day — Abraham obeys 'as God had said unto him': Ishmael, those 'born in his house', and those 'bought with his money' are all circumcised on the one day (vv.26–27). He is ninety-nine and Ishmael thirteen (vv.24–25). The sign reaches every male of the household, as v.12–13 required.
Verse 25
thirteen years old — Ishmael was born when Abram was eighty-six (Gen 16:16), so at his circumcision he is thirteen. Isaac, promised 'at this set time in the next year' (v.21), is circumcised at the age the covenant fixes, 'eight days old' (Gen 21:4).