Then Moses called all the elders of Israel and said to them, “Go and select lambs for yourselves according to your clans, and kill the Passover lamb. Take a bunch of hyssop and dip it in the blood that is in the basin, and touch the lintel and the two doorposts with the blood that is in the basin. None of you shall go out of the door of his house until the morning. For the LORD will pass through to strike the Egyptians, and when he sees the blood on the lintel and on the two doorposts, the LORD will pass over the door and will not allow the destroyer to enter your houses to strike you. You shall observe this rite as a statute for you and for your sons forever. And when you come to the land that the LORD will give you, as he has promised, you shall keep this service. And when your children say to you, ‘What do you mean by this service?’ you shall say, ‘It is the sacrifice of the LORD’s Passover, for he passed over the houses of the people of Israel in Egypt, when he struck the Egyptians but spared our houses.’” And the people bowed their heads and worshiped.
Then the people of Israel went and did so; as the LORD had commanded Moses and Aaron, so they did.
At midnight the LORD struck down all the firstborn in the land of Egypt, from the firstborn of Pharaoh who sat on his throne to the firstborn of the captive who was in the dungeon, and all the firstborn of the livestock. And Pharaoh rose up in the night, he and all his servants and all the Egyptians. And there was a great cry in Egypt, for there was not a house where someone was not dead. Then he summoned Moses and Aaron by night and said, “Up, go out from among my people, both you and the people of Israel; and go, serve the LORD, as you have said. Take your flocks and your herds, as you have said, and be gone, and bless me also!”
The Egyptians were urgent with the people to send them out of the land in haste. For they said, “We shall all be dead.” So the people took their dough before it was leavened, their kneading bowls being bound up in their cloaks on their shoulders. The people of Israel had also done as Moses told them, for they had asked the Egyptians for silver and gold jewelry and for clothing. And the LORD had given the people favor in the sight of the Egyptians, so that they let them have what they asked. Thus they plundered the Egyptians.
And the people of Israel journeyed from Rameses to Succoth, about six hundred thousand men on foot, besides women and children. A mixed multitude also went up with them, and very much livestock, both flocks and herds. And they baked unleavened cakes of the dough that they had brought out of Egypt, for it was not leavened, because they were thrust out of Egypt and could not wait, nor had they prepared any provisions for themselves.
The time that the people of Israel lived in Egypt was 430 years. At the end of 430 years, on that very day, all the hosts of the LORD went out from the land of Egypt. It was a night of watching by the LORD, to bring them out of the land of Egypt; so this same night is a night of watching kept to the LORD by all the people of Israel throughout their generations.
And the LORD said to Moses and Aaron, “This is the statute of the Passover: no foreigner shall eat of it, but every slave that is bought for money may eat of it after you have circumcised him. No foreigner or hired worker may eat of it. It shall be eaten in one house; you shall not take any of the flesh outside the house, and you shall not break any of its bones. All the congregation of Israel shall keep it. If a stranger shall sojourn with you and would keep the Passover to the LORD, let all his males be circumcised. Then he may come near and keep it; he shall be as a native of the land. But no uncircumcised person shall eat of it. There shall be one law for the native and for the stranger who sojourns among you.”
All the people of Israel did just as the LORD commanded Moses and Aaron. And on that very day the LORD brought the people of Israel out of the land of Egypt by their hosts. (Exodus 12:21-51 ESV)
God knows how weak we are. He knows that if He did not institutionalize the Passover it would have been forgotten. By making it a required festival it was assured that every year there would be opportunity to recount to themselves and their children what happened in Egypt on that fateful night, 430 years to the day that they entered Egypt and became slaves.
With the death of Pharaoh’s firstborn and the firstborn of all Egyptians and even their flocks and herds, Pharaoh has had enough and commands the people to leave immediately, with the Egyptians hurrying them out of fear of more deaths. Yahweh gives Moses more instruction about how to observe the Passover and who may partake of it. Those who are not Jewish must basically become converts to Judaism in order to participate in Passover.
The people bring with them great wealth donated by the Egyptians as well as their own herds and flocks. So begins a journey of faith into the wilderness and on toward the land of Canaan. They are not done with Pharaoh yet because God has more to show them.
God is still working in this way in our lives. We are on a journey toward Christlikeness and we are on this journey as a family of believers. Those not yet believers can become so and join us. We have not arrived. The journey is a process of never stopping to grow and never stopping loving one another as we await the coming kingdom.