Exodus 12:10-12 World English Bible (WEB)
10 You shall let nothing of it remain until the morning; but that which remains of it until the morning you shall burn with fire. 11 This is how you shall eat it: with your belt on your waist, your sandals on your feet, and your staff in your hand; and you shall eat it in haste: it is Yahweh’s Passover. 12 For I will go through the land of Egypt in that night, and will strike all the firstborn in the land of Egypt, both man and animal. I will execute judgments against all the gods of Egypt. I am Yahweh.