Exodus 12:24-27

24“Remember, these instructions are a permanent law that you and your descendants must observe forever.

25When you enter the land the Lord has promised to give you, you will continue to observe this ceremony.

26Then your children will ask, ‘What does this ceremony mean?’

27And you will reply, ‘It is the Passover sacrifice to the Lord, for he passed over the houses of the Israelites in Egypt. And though he struck the Egyptians, he spared our families.’” When Moses had finished speaking, all the people bowed down to the ground and worshiped.