The Law of the Lord Has Come Out of Egypt

Seven days you shall eat unleavened bread, and on the seventh day there shall be a feast to the Lord. Every firstling of a donkey you shall redeem with a lamb, or if you will not redeem it, you shall break its neck. All the firstlings of your cattle that are males shall be the Lord's. It shall be as a mark on your hand, or frontlets between your eyes, for by a strong hand the Lord brought us out of Egypt. When Pharaoh stubbornly refused to let us go, the Lord slew all the firstborn in the land of Egypt"