How the Four Hundred and Thirty Years Are Counted From Abraham

"Now the sojourning of the children of Israel, who dwelt in Egypt, was four hundred and thirty years" (Exodus 12:40). Now were Israel in Egypt four hundred and thirty years? They were in Egypt only two hundred and ten years! Then why does the text say, "the sojourning of the children of Israel, who dwelt in Egypt, was four hundred and thirty years"? They dwelt in many dwellings: the dwelling of Abraham in the land of the Philistines, the dwelling of Isaac in the land of Canaan, the dwelling of Jacob in the land of his father's sojournings. You gather them up and make them four hundred years. And from where do we know that it was four hundred years? It was said to Abraham our father at the covenant between the pieces, "Know of a surety that your seed shall be a stranger in a land that is not theirs, and they shall afflict them four hundred years" (Genesis 15:13). Of Isaac, what does it say? "And Isaac was sixty years old when she bore them" (Genesis 25:26). And likewise of Jacob it says, "The days of the years of my sojournings are a hundred and thirty years" (Genesis 47:9); behold that is a hundred and ninety. There remain two hundred and ten years that they were there. And a sign for the matter is the years of Job's life: when Israel went down to Egypt, Job was born, and when they went up, he died, as it is said, "And the LORD gave Job twice as much as he had before" (Job 42:10), and it says, "And after this Job lived a hundred and forty years" (Job 42:16).