Abraham asked God how he could know. What he got in reply was not an explanation. It was a ceremony, at night, with animals cut in half — and one detail in it changes who is responsible for everything that follows.

This page takes that scene on its own, because it carries more weight than any other moment in his life. The life itself is told at Abraham — The Father of a Nation.

Genesis 15 — the cutting of the covenant

Abram asks God how he can know. What follows is the strangest and most important scene in his life.

He took Abram outside and said, “Now look up at the sky and count the stars, if you are able to count them… That’s how many descendants you will have!” Then Abram believed the Lord, and that faith was regarded as the basis of Abram’s approval by the Lord.

Genesis 15:5–6 · GOD’S WORD Translation

That single sentence is quoted three times in the New Testament to establish that we are justified by faith. It is here, in the dark, from a childless man looking at stars.

Then God tells him to cut animals in half and lay the pieces opposite each other, forming an aisle of blood.

Strange to us. Not strange to him.

Cutting a covenant was a known legal form across the ancient Near East, and Abraham would have recognised the setup immediately — in Hebrew you do not make a covenant, you cut one. Both parties walked together between the pieces, and the walk was the signature. What it said was unmistakable: may it be done to me as it has been done to these animals, if I fail to keep this covenant. A self-inflicted curse, sworn in advance, in the presence of what breaking it would cost.

So Abraham knows what is about to be asked of him. He has prepared the pieces. He is waiting to walk.

And then he is put to sleep.

The sun had gone down, and it was dark. Suddenly a smoking oven and a flaming torch passed between the animal pieces.

Genesis 15:17 · GOD’S WORD Translation

God walks the path alone.

Understand what that would have meant to a man who knew the ritual. The one party who could never break the covenant takes the whole self-curse on Himself — and the party who certainly will break it is lying unconscious on the ground, having signed nothing.

God does not say keep this and I will bless you. He says, in the only language Abraham had for it, may I be torn apart if this fails. And since the failure, when it comes, will be ours and not His, He is swearing to bear a penalty He cannot possibly incur by His own fault.

He slept while God took his place

That is the sentence to carry out of this chapter.

Abraham does not walk because God walks in his place. And the effect of that is not sentimental — it is legal, and it decides everything that follows. The keeping of this covenant is not placed on Abraham. It could not be. He would have been unable to keep it, and the next fifteen hundred years of his offspring are the proof: the golden calf, the judges, the divided kingdom, the exile. Everything from here to Malachi is a demonstration that the human side of a covenant with God cannot be held up by human beings.

God knew that before He laid out the pieces. So He took Abraham’s place and shouldered the responsibility of both sides of the covenant on Himself. He is the promising party and the guaranteeing party. He swears to bless, and He swears to bear the penalty for the failure to keep it — a failure that will be entirely ours.

Which means the covenant cannot fail, because the only signatory is the only one who never breaks His word. Whatever Israel does, whatever we do, there is no clause under which this agreement collapses — there is only a curse God has already accepted in advance.

This is what this study means when it calls a covenant diatheke rather than an agreement between equals. The terms are set by God, guaranteed by God, and the other party is asleep for the signing.

And it was never a licence

Say the next part carefully, because this is exactly where people go wrong with it.

God swearing by Himself did not give Abraham and his offspring licence not to keep the covenant. Abraham was still responsible. He was still obliged to walk before God and be blameless, still called to circumcise his household, still answerable for Hagar and for the two occasions he handed his wife to another man to protect himself. And he suffered real consequences when he did not honour it — a family at war with itself, a son sent into the desert, an enmity his descendants inherited.

Israel after him is the same. Pardoned, and still not entering. Kept, and still exiled. The obligation remained; what changed hands was the guarantee.

Hold both, because the Bible never lets go of either. You are responsible for keeping this. And the ultimate keeping of the promise rests on God Himself. Drop the first and you get presumption. Drop the second and you get despair, because nobody has ever managed the first.

And this is another shadow of Jesus — the one who finally fulfilled it. Not by lowering the bar; He raised it, to the heart, where none of us can reach. We go on trying and we go on failing, because the standard is higher than we can bear — and that is not a design fault, it is the point at which a person stops negotiating and starts trusting. He kept it perfectly Himself, and then bore the penalty for everyone who could not. The self-curse sworn between the pieces was accepted in advance and paid in full: a torn body, outside a city, in the dark. The oath sworn between the pieces was kept between two thieves.

Hebrews 6 — God swore by Himself

The writer of Hebrews goes back to this chapter and asks what kind of guarantee Abraham was actually given.

For when God made the promise to Abraham, since He could swear by no one greater, He swore by Himself… And so, having patiently waited, he obtained the promise. For men swear by one greater than themselves, and with them an oath given as confirmation is an end of every dispute.

Hebrews 6:13–16 · Legacy Standard Bible

A man swears by something above him — a court, a book, a name he would not dare misuse — and that ends the argument. God has nothing above Him. So He staked Himself. There was no higher security available in the universe, and He offered the only one there was.

…so that by two unchangeable things in which it is impossible for God to lie, we who have taken refuge would have strong encouragement to take hold of the hope set before us. This hope we have as an anchor of the soul, a hope both sure and confirmed and one which enters within the veil, where a forerunner has entered for us — Jesus, having become a high priest forever according to the order of Melchizedek.

Hebrews 6:18–20 · Legacy Standard Bible

The two unchangeable things are the promise and the oath. God said it, and then He swore it — not because His word needed help, but because ours does.

And note the three words the writer uses: anchor, within the veil, forerunner. The anchor of this hope is not dropped into anything on earth. It goes through the curtain into the Holy of Holies — and somebody has already gone in ahead of us and made it fast.

Also worth catching: having patiently waited, he obtained the promise. Twenty-five years, summarised in four words by a writer who knew exactly how long they were.

Hebrews 7 — the priest Abraham tithed to

That last sentence ends according to the order of Melchizedek, which sends us back to four verses in Genesis 14 — a priest-king who blesses Abram, receives a tenth of everything, and vanishes.

For this Melchizedek, king of Salem, priest of the Most High God… was first of all, by the translation of his name, king of righteousness, and then also king of Salem, which is king of peace. Without father, without mother, without genealogy, having neither beginning of days nor end of life, but made like the Son of God, he remains a priest continually.

Hebrews 7:1–3 · Legacy Standard Bible

The name and the city. Melchi-zedek is king of righteousness; Salem is peace — the same root as shalom, and the city that will one day be called Jerusalem. Righteousness first, then peace, in that order.

“Without father, without mother, without genealogy.” This is not a claim that he had no parents. In a book where priesthood is inherited and every priest must document his descent, Melchizedek arrives with no papers. Genesis gives him no ancestry, no birth, no death — and Hebrews reads that silence as deliberate. A priest whose authority does not come from a family line, and whose service has no recorded end.

Now observe how great this man was to whom Abraham, the patriarch, gave a tenth of the spoils… But without any dispute the lesser is blessed by the greater… And, so to speak, through Abraham even Levi, who received tithes, paid tithes, for he was still in the loins of his father when Melchizedek met him.

Hebrews 7:4–10 · Legacy Standard Bible

Follow it. Abraham gave the tenth, and Abraham received the blessing — and the lesser is always blessed by the greater. So Melchizedek outranks Abraham. And Levi, the whole priestly tribe, was still unborn inside Abraham at the time. The Levitical priesthood paid its tithe to this man before it existed.

Which is the point of the chapter: there was a priesthood older and higher than Aaron’s, acknowledged by Abraham himself, and it is the order Jesus belongs to. Not by descent — He came from Judah, not Levi, and had no legal claim to the altar at all — but by an appointment that never depended on a genealogy in the first place.

The covenant was never replaced

The covenant made with Abraham is called everlasting, and the New Testament does not cancel it. It was not terminated and replaced, but expanded into the fullness of its life.

The picture for it is a bulb and a flower. The flower does not abolish the bulb or replace it with something foreign — the flower is what the bulb was planted for. Nobody looking at a tulip says the bulb has been superseded. They say it finally did what it was for.

That is why this study does not teach that the church has replaced Israel. One covenant people, opened wider — which is what through you every family on earth will be blessed said at the very beginning, before there was a nation to be jealous about.

Back to the story. Abraham wakes from this to twenty-five years of waiting, one bad decision, and a mountain in Moriah. It is all at Abraham — The Father of a Nation.