The Hebrew of Genesis 15:14 promises judgment on the nation whom they shall serve. Targum Pseudo-Jonathan gives the judgment a number that has startled readers for centuries.
Two hundred and fifty plagues.
Not ten. Two hundred and fifty.
Where does the figure come from? The rabbis of the Targum tradition arrived at it by compounding the ten plagues of Exodus with layered expansions — each plague branching into more strikes at sea and in the wilderness. The precise math matters less than the theological message. The Lord's accounting is not casual. Every blow that would fall on Abraham's children in Egypt is already being catalogued, and the counter-blows are already pre-weighed and reserved.
Then the Targum finishes the promise: and afterwards they shall go forth into liberty with great riches.
Suffering, judgment, deliverance, and plunder, in that order. The Maggid hears the shape of every Jewish redemption in miniature here (Genesis 15:14). Oppression is not ignored. It is recorded. And when the reckoning comes, it comes with precision — two hundred and fifty items on a ledger — and the freed people walk out not empty-handed but laden. Moses will one day lead them past pyramids carrying the silver of their captors, and the whole audit was written up in advance, here, in a vision Abraham had at sundown.