Exodus 12:27 CPDV

²⁵  And when you have entered into the land that the Lord will give to you, just as he has promised, you shall observe these ceremonies.

²⁶  And when your sons will say to you, 'What is the meaning of this religious observance?'

²⁷  You shall say to them: 'It is the victim of the crossing of the Lord, when he passed over the houses of the sons of Israel in Egypt, striking the Egyptians, and freeing our houses.' And the people, bowing down, worshipped.

²⁸  And the sons of Israel, departing, did just as the Lord had instructed Moses and Aaron.

²⁹  Then it happened, in the middle of the night: the Lord struck down every firstborn in the land of Egypt, from the firstborn of Pharaoh, who sits on his throne, even to the firstborn of the captive woman who was in prison, and all the firstborn of the cattle.