The Passover.

 Exodus 12:21 Then Moses summoned all the elders of Israel and said to them, "Go at once and select the animals for your families and slaughter the Passover lamb. 22 Take a bunch of hyssop, dip it into the blood in the basin and put some of the blood on the top and on both sides of the doorframe. None of you shall go out of the door of your house until morning. 23 When the Lord goes through the land to strike down the Egyptians, he will see the blood on the top and sides of the doorframe and will pass over that doorway, and he will not permit the destroyer to enter your houses and strike you down. 26 And when your children ask you, 'What does this ceremony mean to you?' 27 then tell them, 'It is the Passover sacrifice to the Lord, who passed over the houses of the Israelites in Egypt and spared our homes when he struck down the Egyptians.'" Then the people bowed down and worshiped. 28 The Israelites did just what the Lord commanded Moses and Aaron. 29 At midnight the Lord struck down all the firstborn in Egypt, from the firstborn of Pharaoh, who sat on the throne, to the firstborn of the prisoner, who was in the dungeon, and the firstborn of all the livestock as well. 30 Pharaoh and all his officials and all the Egyptians got up during the night, and there was loud wailing in Egypt, for there was not a house without someone dead. 31 During the night Pharaoh summoned Moses and Aaron and said, "Up! Leave my people, you and the Israelites! Go, worship the Lord as you have requested. 32 Take your flocks and herds, as you have said, and go. And also bless me." 33 The Egyptians urged the people to hurry and leave the country. "For otherwise," they said, "we will all die!" 34 So the people took their dough before the yeast was added, and carried it on their shoulders in kneading troughs wrapped in clothing. 35 The Israelites did as Moses instructed and asked the Egyptians for articles of silver and gold and for clothing. 36 The Lord had made the Egyptians favorably disposed toward the people, and they gave them what they asked for; so they plundered the Egyptians. 37 The Israelites journeyed from Rameses to Sukkoth. There were about six hundred thousand men on foot, besides women and children.

41 At the end of the 430 years, to the very day, all the Lord's divisions left Egypt.