The Lamb: Offered in Sacrifice: At the Passover

Tell the whole congregation of Israel that on the tenth day of this month each man must select a lamb for his family, one per household.

You must keep it until the fourteenth day of the month, when the whole assembly of the congregation of Israel will slaughter the animals at twilight.

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