The Book of Genesis

Hebrew Study

Explanation

Verse 1 sets the scene: Abram is ninety-nine, and the years since Ishmael have been silent. God appears and gives His name and His command together: "I am the Almighty God; walk before me, and be thou perfect." The order matters, who God is comes first, then how Abraham is to live; the walk flows from the name. Verses 2 through 6 pour out the covenant: multiplied exceedingly, made "a father of many nations," and given a new name that carries the promise. Verse 7 lifts the covenant into eternity, "an everlasting covenant, to be a God unto thee, and to thy seed after thee," and verse 8 grants "all the land of Canaan, for an everlasting possession." Abraham's response is the only fitting one: "Abram fell on his face."

Gospel Focus

"I am the Almighty God" is the whole answer to a delayed promise. The problem was never God's power but our patience; when God finally moves, He does not offer Abraham a technique but Himself, El Shaddai, the God who is enough. Paul builds Romans 4 on exactly this moment: Abraham "staggered not at the promise of God through unbelief; but was strong in faith, giving glory to God; and being fully persuaded that, what he had promised, he was able also to perform" (Romans 4:20-21). And the covenant's true center is verse 7: "to be a God unto thee." Every covenant God makes climaxes in this, "I will be their God, and they shall be my people" (Ezekiel 37:27; Revelation 21:3). The land, the seed, the blessing, all of it exists to secure that one treasure: God Himself, ours forever. Walk before the God who is enough.

Hebrew Study

Explanation

God gives the covenant a "token" (verse 11), an old word for a sign or mark: circumcision, the cutting away of the foreskin of every male. It was to fall on the eighth day (verse 12), and to include not only natural sons but servants "bought with money" (verse 12), the whole household under the covenant. Verse 14 attaches a solemn warning: the uncircumcised male "hath broken my covenant" and is cut off. Why this sign? It marked the covenant in the very place from which the promised seed would come, declaring that the line of promise belonged wholly to God. It was permanent, unlike a garment; personal, borne on the body; and secret, a private mark of a public people. And it always demanded more than the surgery, for even Moses would later say, "Circumcise therefore the foreskin of your heart" (Deuteronomy 10:16).

Gospel Focus

The New Testament resolves circumcision without discarding its meaning. Paul insists the sign was never the substance: "he is not a Jew, which is one outwardly... circumcision is that of the heart, in the spirit" (Romans 2:28-29), and he reminds us that Abraham "received the sign of circumcision, a seal of the righteousness of the faith which he had yet being uncircumcised" (Romans 4:11), the faith of chapter 15 came first, the sign after. Under the new covenant the outward cutting gives way to its reality: "In whom also ye are circumcised with the circumcision made without hands, in putting off the body of the sins of the flesh by the circumcision of Christ: Buried with him in baptism" (Colossians 2:11-12). What circumcision pictured, the cutting away of the flesh, is accomplished in the new birth and pictured now in baptism in Jesus' name. The sign has changed; the demand it always carried, a heart wholly God's, has not.

Hebrew Study

Explanation

For the first time God names Sarah in the promise: not merely a son for Abraham, but "a son also of her", she herself, ninety years old and barren, would be the mother, "a mother of nations." Abraham's response in verses 17 and 18 is honest: he falls on his face, laughs at the arithmetic ("Shall a child be born unto him that is an hundred years old?"), and offers God an easier path, "O that Ishmael might live before thee!" It is the old temptation to let the work of the flesh stand in for the promise of God. God's answer is a firm refusal (verse 19): Ishmael is genuinely blessed, twelve princes, a great nation (verse 20), for God keeps even His lesser words; but the covenant runs through Isaac alone, "which Sarah shall bear unto thee at this set time in the next year." The impossible now has a date.

Gospel Focus

"But my covenant will I establish with Isaac." God will not accept our Ishmaels as substitutes for His Isaacs. What we produce by our own effort, however dear, cannot inherit what God promised to produce by His power; Paul says it plainly: "They which are the children of the flesh, these are not the children of God: but the children of the promise are counted for the seed" (Romans 9:8). This is grace guarding its own nature: if Ishmael could inherit, salvation would be by works, and Sarah's dead womb is the whole point, so that the child is unmistakably God's gift and not man's achievement. And notice God's kindness even in His refusal: Ishmael is heard, blessed, and given a future. God's refusal to build His covenant on our flesh is never cruelty to what we have made; it is faithfulness to what He has promised. The laughter of unbelief becomes, in time, the laughter of a mother holding the impossible child (21:6). What God promises, El Shaddai performs, on His set time.

Hebrew Study

Explanation

The chapter closes with obedience as immediate as it was costly. Twice the text stresses "the selfsame day" (verses 23, 26), an old phrase meaning that very same day: no waiting for a convenient season, no negotiating the terms, no gradual easing into a painful command at ninety-nine years of age. Abraham circumcised himself, Ishmael, and every male of his household the same day God spoke. The note that Ishmael was thirteen has left a lasting mark: to this day many of Ishmael's descendants circumcise their sons at that age, a quiet historical echo of this very verse. Abraham heard, and Abraham did, completely and at once, the same obedient faith that had first counted him righteous now cutting into his own flesh.

Gospel Focus

Faith that is real obeys quickly and fully. "I made haste, and delayed not to keep thy commandments" (Psalm 119:60) is the heartbeat of every genuine believer, and Abraham, "the father of all them that believe" (Romans 4:11), models it at the end of his life as at the beginning: at the call he "went out, not knowing whither he went" (Hebrews 11:8); at the covenant he obeys "in the selfsame day"; at Moriah he will rise "early in the morning" (22:3). Delayed obedience is disguised disobedience, and partial obedience is not obedience at all. The command was painful, public within his household, and humanly unreasonable for a man his age, and he did all of it the day he heard it. When God has spoken, the only question left for faith is how quickly it can obey.