“And thus shall ye eat it; with your loins girded, your shoes on your feet, and your staff in your hand; and ye shall eat it in haste: it is the LORD’S passover. For I will pass through the land of Egypt this night, and will smite all the firstborn in the land of Egypt, both man and beast; and against all the gods of Egypt I will execute judgment: I am the LORD. And the blood shall be to you for a token upon the houses where ye are: and when I see the blood, I will pass over you, and the plague shall not be upon you to destroy you, when I smite the land of Egypt. And this day shall be unto you for a memorial; and ye shall keep it a feast to the LORD throughout your generations; ye shall keep it a feast by an ordinance for ever. Seven days shall ye eat unleavened bread; even the first day ye shall put away leaven out of your houses: for whosoever eateth leavened bread from the first day until the seventh day, that soul shall be cut off from Israel. And in the first day there shall be an holy convocation, and in the seventh day there shall be an holy convocation to you; no manner of work shall be done in them, save that which every man must eat, that only may be done of you. And ye shall observe the feast of unleavened bread; for in this selfsame day have I brought your armies out of the land of Egypt: therefore shall ye observe this day in your generations by an ordinance for ever.” Exodus 12:11-17 (KJB)
It seems in reading of the plagues which wracked Egypt with pain, misery, and possible poverty was only Egyptian experiencing these thing. Israel was protected. The last and final plague was somewhat different.
The LORD gave Moses and Aaron one way of escaping the coming plague on all the firstborn of the land. Every household of Israel must sacrifice a lamb from their flocks, and using the hyssop plant paint the blood of that lamb on the lintel and on each door post. God says to them, “…When I see the blood, I will pass over you…”. This was to be a memorial for them from generation to generation, and we see them holding the feast in great regard in Jesus’s day, even the crucifixion was done during the celebration of Passover.
Just as Israel was saved, delivered by the blood of a lamb on the very first Passover; so now are all men who will come into the place of the blood of the Lamb (Jesus Christ) shall be delivered from the eternal death that awaits all who will not repent and fall on His grace and mercy.
The blood that stained the Old Rugged Cross is still quite sufficient to save, and deliver all who will come to Him. Come to Him. Call on His name today. His name is Jesus.