Exodus Exodus 22:18-23:13
The heart of the Book of the Covenant is one sentence said twice: 'for you were sojourners in the land of Egypt.' It brackets the whole unit and states the law's spine — Israel, the redeemed oppressed, is forbidden to become the oppressor. The verb of Pharaoh's program against Israel is the very verb God forbids Israel to use against the widow and orphan, and the release it sets in motion reaches, through Jubilee and prophecy, to the year of the Lord's favor that Jesus proclaims at Nazareth.
Genesis 12:10-13:18
A heavy famine drives Abram down; a heavy wealth carries him back up. Between the two, Yahweh strikes Pharaoh with great plagues — the first plague-word in the canon. Then Lot lifts his eyes and chooses the plain that is about to burn, and Yahweh tells Abram to lift his eyes and see the land he will give to his seed forever. Gen 12:10–13:18 is the miniature Exodus that frames the covenant's first 'forever.'