Exodus 12:25-27

Wycliffe Bible

²⁵ And when ye shall enter into the land which the Lord shall give to you, as he promised, ye shall keep these ceremonies;

²⁶ and when your sons shall say to you, What is this religion? (What is the meaning of this rite?)

²⁷ ye shall say to them, It is the sacrifice of the passing (over) of the Lord, when he passed over the houses of the sons of Israel in Egypt, and smote the Egyptians, and delivered our houses (but spared our houses). And the people was bowed, and worshipped.