Exodus 12:3-8

3Speak ye to all the congregation of Israel, saying, In the tenth day of this month they shall take to them every man a lamb, according to the house of their fathers, a lamb for an house:1

4And if the household shall be too small for the lamb, let him and his neighbour next to his house take it according to the number of the souls; every man according to his eating shall make your count for the lamb.

5Your lamb shall be without blemish, a male of the first year: ye shall take it from the sheep, or from the goats:2

6And ye shall keep it until the fourteenth day of the same month: and the whole assembly of the congregation of Israel shall kill it in the evening.3

7And they shall take of the blood, and strike it on the two side posts and on the upper door post of the houses, in which they shall eat it.

8And they shall eat the flesh in that night, roasted with fire, and unleavened bread; and with bitter herbs they shall eat it.