Exodus 12:3-8

³Speak to all the congregation of the children of Israel, saying, On the tenth of this month let them take each man a lamb according to the houses of their families, every man a lamb for his household.

⁴And if they be few in a household, so that there are not enough for the lamb, he shall take with himself his neighbour that lives near to him,—as to the number of souls, every one according to that which suffices him shall make a reckoning for the lamb.

⁵It shall be to you a lamb unblemished, a male of a year old: ye shall take it of the lambs and the kids.

⁶And it shall be kept by you till the fourteenth of this month, and all the multitude of the congregation of the children of Israel shall kill it toward evening.

⁷And they shall take of the blood, and shall put it on the two door-posts, and on the lintel, in the houses in which soever they shall eat them.

⁸And they shall eat the flesh in this night roast with fire, and they shall eat unleavened bread with bitter herbs.