Genesis17

At ninety-nine years old, the LORD appears to Abram, establishing an everlasting covenant and changing his name to Abraham, signifying his role as father of many nations. The sign of this covenant is circumcision for all males. God also promises a son, Isaac, through Sarah, despite their old age, while also blessing Ishmael. Abraham promptly obeys by circumcising himself and his household.
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God Renews the Covenant with Abram

1
And when Abram was ninety years old and nine, the LORD appeared to Abram, and said unto him, I am the Almighty God; walk before me, and be thou perfect. ​
2
And I will make my covenant between me and thee, and will multiply thee exceedingly.
3
And Abram fell on his face: and God talked with him, saying,
4
As for me, behold, my covenant is with thee, and thou shalt be a father of many nations.
5
Neither shall thy name any more be called Abram, but thy name shall be Abraham; for a father of many nations have I made thee. ​
6
And I will make thee exceeding fruitful, and I will make nations of thee, and kings shall come out of thee.
7
And I will establish my covenant between me and thee and thy seed after thee in their generations for an everlasting covenant, to be a God unto thee, and to thy seed after thee. ​
8
And I will give unto thee, and to thy seed after thee, the land wherein thou art a stranger, all the land of Canaan, for an everlasting possession; and I will be their God. ​

The Sign of the Covenant: Circumcision

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And God said unto Abraham, Thou shalt keep my covenant therefore, thou, and thy seed after thee in their generations. ​
10
This is my covenant, which ye shall keep, between me and you and thy seed after thee; Every man child among you shall be circumcised. ​
11
And ye shall circumcise the flesh of your foreskin; and it shall be a token of the covenant betwixt me and you.
12
And he that is eight days old shall be circumcised among you, every man child in your generations, he that is born in the house, or bought with money of any stranger, which is not of thy seed. ​
13
He that is born in thy house, and he that is bought with thy money, must needs be circumcised: and my covenant shall be in your flesh for an everlasting covenant.
14
And the uncircumcised man child whose flesh of his foreskin is not circumcised, that soul shall be cut off from his people; he hath broken my covenant. ​

Sarah and the Promise of Isaac

15
And God said unto Abraham, As for Sarai thy wife, thou shalt not call her name Sarai, but Sarah shall her name be. ​
16
And I will bless her, and give thee a son also of her: yea, I will bless her, and she shall be a mother of nations; kings of people shall be of her.
17
Then Abraham fell upon his face, and laughed, and said in his heart, Shall a child be born unto him that is an hundred years old? and shall Sarah, that is ninety years old, bear? ​
18
And Abraham said unto God, O that Ishmael might live before thee! ​
19
And God said, Sarah thy wife shall bear thee a son indeed; and thou shalt call his name Isaac: and I will establish my covenant with him for an everlasting covenant, and with his seed after him. ​
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And as for Ishmael, I have heard thee: Behold, I have blessed him, and will make him fruitful, and will multiply him exceedingly; twelve princes shall he beget, and I will make him a great nation. ​
21
But my covenant will I establish with Isaac, which Sarah shall bear unto thee at this set time in the next year.
22
And he left off talking with him, and God went up from Abraham.

Abraham Obeys Immediately

23
And Abraham took Ishmael his son, and all that were born in his house, and all that were bought with his money, every male among the men of Abraham's house; and circumcised the flesh of their foreskin in the selfsame day, as God had said unto him. ​
24
And Abraham was ninety years old and nine, when he was circumcised in the flesh of his foreskin.
25
And Ishmael his son was thirteen years old, when he was circumcised in the flesh of his foreskin. ​
26
In the selfsame day was Abraham circumcised, and Ishmael his son.
27
And all the men of his house, born in the house, and bought with money of the stranger, were circumcised with him.

Study Notes for Genesis 17

Verse 1

This appearance occurs 13 years after Ishmael’s birth (Gen 16:16). God reveals Himself as *El Shaddai* (Almighty God), emphasizing His sufficiency and power to fulfill the promises despite Abram’s advanced age. The command to 'walk before me, and be thou perfect' establishes the requirement of faithful, blameless obedience.

Verse 5

God changes 'Abram' (Exalted Father) to 'Abraham' (Father of a Multitude/Many Nations). This name change seals the promise, signifying a new identity and destiny linked entirely to God's expansive plan.

Verse 7

The covenant is defined as 'everlasting,' emphasizing its permanence and establishing God as the personal deity of Abraham and his subsequent generations.

Verse 8

The promise of the land of Canaan is affirmed as an 'everlasting possession.' This links the theological covenant permanently to a specific geographical inheritance for Abraham’s seed.

Verse 9

The covenant previously presented as unilateral (God promising) is now conditioned on Abraham and his descendants keeping the sign. This introduces the requirement for human response.

Verse 10

Circumcision serves as the physical, permanent mark separating the covenant community from the surrounding nations. It symbolizes purification, dedication, and entrance into the covenant relationship.

Verse 12

The requirement that circumcision be performed on the eighth day sets a fixed time for the ritual. It also ensures that all males attached to Abraham’s house, whether born there or acquired, are included in the covenant community.

Verse 14

Failure to perform the ritual results in being 'cut off' from the people. This severe penalty indicates exclusion from the covenant community and its blessings, highlighting the seriousness of this command.

Verse 15

God renames 'Sarai' (My Princess) to 'Sarah' (Princess/Mother of Nations). This new name confirms her vital, divinely ordained role in the covenant lineage and the ultimate fulfillment of the promise.

Verse 17

Abraham's reaction—falling and laughing—is a mix of shock, doubt, and joy concerning the impossibility of the promise given his and Sarah's advanced ages. This human reaction contrasts with the absolute certainty of God’s decree.

Verse 18

Abraham pleads for Ishmael, suggesting he is content for the covenant promises to run through the existing son. This shows Abraham’s struggle to trust God for a miraculous birth.

Verse 19

God explicitly names the promised son 'Isaac' (meaning 'he laughs,' referencing Abraham’s reaction) and confirms that the everlasting covenant will be established *only* through him.

Verse 20

God graciously blesses Ishmael, promising him great fruitfulness and twelve princes, fulfilled later in Genesis 25. However, God clearly separates this blessing from the primary covenant line that leads to Israel.

Verse 23

Abraham’s immediate and comprehensive obedience demonstrates faith in action. He circumcises every male in his household on the very same day, confirming his loyalty to the newly established covenant sign.

Verse 25

Ishmael was 13 years old when he was circumcised. This specific age established the traditional age for this rite among his descendants.

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