Exodus 12:17-23

“Keep the Festival of Unraised Bread! This marks the exact day I brought you out in force from the land of Egypt. Honor the day down through your generations, a fixed festival to be observed always. In the first month, beginning on the fourteenth day at evening until the twenty-first day at evening, you are to eat unraised bread. For those seven days not a trace of yeast is to be found in your houses. Anyone, whether a visitor or a native of the land, who eats anything raised shall be cut off from the community of Israel. Don’t eat anything raised. Only matzoth.” Moses assembled all the elders of Israel. He said, “Select a lamb for your families and slaughter the Passover lamb. Take a bunch of hyssop and dip it in the bowl of blood and smear it on the lintel and on the two doorposts. No one is to leave the house until morning. GOD will pass through to strike Egypt down. When he sees the blood on the lintel and the two doorposts, GOD will pass over the doorway; he won’t let the destroyer enter your house to strike you down with ruin.