The Blood of Isaac's Binding and the Passover Leap Over Israel

Another interpretation: "the blood of Isaac's binding." As it is said, "And Abraham called the name of that place 'the LORD will see'" (Genesis 22:14), and elsewhere it says, "And as he was about to destroy, the LORD saw and relented" (1 Chronicles 21:15). What did He see? The blood of Isaac's binding, as it is said, "God will see to the lamb for Himself" (Genesis 22:8). "And I will pass over you." Rabbi Josiah says: Do not read 'and I will pass over' [u-fasachti] but 'and I will stride' [u-fasati], for the Omnipresent leaps over the houses of His children in Egypt, as it is said, "The voice of my beloved! Behold, he comes... behold, he stands behind our wall" (Song of Songs 2:8-9). Rabbi Jonathan says: "And I will pass over you" means: I have pity on you, and I have no pity on the Egyptians. Suppose an Egyptian was in the house of an Israelite. I might think he too would be saved on the Israelite's account; therefore Scripture teaches, "And I will pass over you" - upon you I have pity, and I have no pity on the Egyptians. And suppose an Israelite was in the house of an Egyptian. I might think he too would be struck on the Egyptian's account; therefore Scripture teaches, "and there shall be no plague upon you" - 'upon you' there is none, but in Egypt there is. "When I strike in the land of Egypt" - in the present there is none, but there is at a later time.