Exodus 12:8, 1, 3-7, 2, 9-14

They shall eat the flesh on that night, roasted with fire, and they shall eat it with unleavened bread and bitter herbs.

Now the LORD spoke to Moses and Aaron in the land of Egypt, saying

Speak to all the congregation of Israel, saying: On the tenth day of this month every man shall take a lamb, according to the house of their fathers, a lamb for a household. And if the household be too little for the lamb, let him and his neighbor next to his house take it according to the number of the persons; according to what each man shall eat, divide the lamb. Your lamb shall be without blemish, a male of the first year. You shall take it out from the sheep, or from the goats. You shall keep it up until the fourteenth day of the same month, and then the whole assembly of the congregation of Israel shall kill it in the evening. They shall take some of the blood and put it on the two side posts and on the upper doorpost of the houses in which they shall eat it.

This month shall be the beginning of months to you. It shall be the first month of the year to you.

Do not eat it raw, nor boiled at all with water, but roasted with fire, its head with its legs and its entrails. And you shall let nothing of it remain until the morning, but that of it which remains until the morning you shall burn with fire. In this way shall you eat it: with your waist girded, your sandals on your feet, and your staff in your hand. So you shall eat it in haste. It is the LORD’s Passover. For I will pass through the land of Egypt this night and will smite all the firstborn in the land of Egypt, both man and beast, and against all the gods of Egypt I will execute judgment. I am the LORD. The blood shall be to you for a sign on the houses where you are. And when I see the blood, I will pass over you, and the plague shall not be upon you to destroy you when I smite the land of Egypt. This day shall be a memorial to you, and you shall keep it as a feast to the LORD. Throughout your generations you shall keep it a feast by an eternal ordinance.