The history of the Passover is given in Exodus 12:
“Then Moses called all the elders of Israel and said to them, “Go, select lambs for your families, and slaughter the Passover lamb. Take a bunch of hyssop, dip it in the blood that is in the basin, and touch the lintel and the two doorposts with the blood in the basin. None of you shall go outside the door of your house until morning. For the Lord will pass through to strike down the Egyptians; when he sees the blood on the lintel and on the two doorposts, the Lord will pass over that door and will not allow the destroyer to enter your houses to strike you down. You shall observe this as a perpetual ordinance for you and your children. When you come to the land that the Lord will give you, as he has promised, you shall keep this observance. And when your children ask you, ‘What does this observance mean to you?’ you shall say, ‘It is the Passover sacrifice to the Lord, for he passed over the houses of the Israelites in Egypt when he struck down the Egyptians but spared our houses.’ ” And the people bowed down and worshiped.” (Vs. 21-28)
Now the blood of Jesus and finished work of the cross protects, cleanses, and sets free any person who will apply the blood ‘over our doorpost’ or over our lives and families. We are as safe as the work of Calvary. The Place of the Skull (Luke 23:33) has given us a new mind and a new life. Death has been Passed Over. Jesus painted our doorposts with his blood. And the people bowed down and worshipped.
“It is the Spirit who gives life; the flesh profits nothing; the words that I have spoken to you are spirit and are life.” Jesus