Moses summons the elders of Israel and orders them to kill the Passover and besprinkle the lintel and sideposts with a bunch of hyssop dipped in blood so that the Lord will pass over the door.
On the 10th day of the month every household shall take a firstling male without blemish, of sheep or goat, and should kill it on the 14th at even, and sprinkle the two sideposts and lintel with the blood, and eat the roasted flesh, not sodden, including head, legs and inwards; all remaining over until the morning to be burnt by fire.
23 seems to connect the original of the feast with a threshold covenant (see Trumbull, Threshold Covenant, Philadelphia, 1902); the daubing of the sideposts and lintel with blood at the original Passover, which finds its counterpart in Babylonian custom (Zimmern, Beit.
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