Deuteronomy 6:21-23

Then thou shalt say unto thy son, We were Pharaoh's bondmen in Egypt; and the LORD brought us out of Egypt with a mighty hand: and the LORD shewed signs and wonders, great and sore, upon Egypt, upon Pharaoh, and upon all his household, before our eyes: and he brought us out from thence, that he might bring us in, to give us the land which he sware unto our fathers.