Exodus 12:7-13

7They are to take some of the blood and put it on the sides and tops of the doorframes1 of the houses where they eat the lambs.

8They are to eat the meat that night, roasted over the fire, along with unleavened bread and bitter herbs.

9Do not eat any of the meat raw or cooked in boiling water, but only roasted over the fire—its head and legs and inner parts. 10Do not leave any of it until morning; before the morning you must burn up any part that is left over.

11This is how you are to eat it: You must be fully dressed for travel,2 with your sandals on your feet and your staff in your hand. You are to eat in haste; it is the LORD’s Passover.

12On that night I will pass through the land of Egypt and strike down every firstborn male, both man and beast, and I will execute judgment against all the gods of Egypt. I am the LORD. 13The blood on the houses where you are staying will be a sign; when I see the blood, I will pass over you. No plague will fall on you to destroy you when I strike the land of Egypt.