The passover was also a type of Christ, the Lamb of God. As the blood of the passover lamb upon the door-posts saved those in the house from death, so all will be saved now who confess their sins, believing that the blood of Jesus was shed to save sinners just as surely as the blood of the passover lamb saved those who trusted in it.
"AND it came to pass, that at midnight the Lord smote all the first-born in the land of Egypt; . . . and there was a great cry in Egypt; for there was not a house where there was not one dead."
And Pharaoh "called for Moses and Aaron by night, and said, Rise up, and get you forth from among my people." And he hurried them out of the land of Egypt with their flocks and herds and all they possessed.