Symbols and Similitudes: Passover, of the Sparing of the Firstborn, and of the Atonement Made by Christ

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. …

Get rid of the old leaven, that you may be a new unleavened batch, as you really are. For Christ, our Passover lamb, has been sacrificed.