Deuteronomy 6:21-23

Then you will say to your son, We were servants under Pharaoh's yoke in Egypt; and the Lord took us out of Egypt with a strong hand: And the Lord did great signs and wonders against Egypt, and against Pharaoh and all his house, before our eyes: And he took us out from that place, guiding us here to give us this land, as he said in his oath to our fathers.