The man God called out of the city of moon-worship
Abraham is where the canon's whole story actually begins. Genesis 1–11 sets the cosmic stage — creation, fall, flood, the scattered nations at Babel. Genesis 12 names a man. Out of Ur of the Chaldees, out of the household of a moon-god priest named Terah, the LORD calls one childless old man to leave everything and walk west.
The call is unprovoked. Abraham has done nothing to earn it, knows nothing of the LORD before being addressed by him, and is given no theological framework before being asked to obey. The Letter to the Hebrews reads the call as the founding act of faith: "By faith Abraham, when called to go to a place he would later receive as his inheritance, obeyed and went, even though he did not know where he was going." (Hebrews 11:8) The Christian tradition has not been able to read Abraham's call as anything less than the inauguration of every later call — Israel's, the disciples', the church's.
Three promises hold the Abrahamic covenant together. Land — Canaan. Seed — a son when Sarah is past the age of conceiving, and through that son a multitude. Blessing — that through Abraham "all the families of the earth" will be blessed. Paul will read the third clause as the gospel preached beforehand to Abraham, with the Gentiles' inclusion already named in the original promise (Galatians 3:8). The Christian editorial reading has always been that the third clause is the load-bearing one. The land and the seed point past themselves toward the international blessing that comes through one descendant in particular.
The binding of Isaac (the Akedah, Genesis 22) is the moment where the typology becomes unbearable. God asks Abraham to offer the very son the promises depended on. Abraham obeys. The knife is raised, the ram is provided, and the mountain — Moriah — becomes the place where the substitution is enacted. Christian readers from at least Origen forward have seen what is impossible to unsee: the beloved son carries the wood of his own offering up the mountain his father will return to centuries later to offer the only Son who was not spared.
Abraham dies before he sees almost any of the promises kept. He owns one field — the cave at Machpelah where he buries Sarah and is later buried himself. He sees one son of the promise, not a multitude. The land of Canaan is, in his lifetime, a place he passes through. Hebrews names this as the point: "All these died in faith, not having received the things promised, but having seen them and greeted them from afar." (Hebrews 11:13) The patriarch's whole life is a posture, not an achievement.
Related entries: Melchizedek, The Binding of Isaac, Hebron