Exodus 13:11-16 - The Feast Of Unleavened Bread

¹¹ And it shall be when Yahweh shall bring thee into the land of the Canaanite, as he sware to thee and to thy fathers, - and shalt give it thee, ¹² that thou shalt set apart whatsoever is born first, to Yahweh; and, of all firstlings of beasts which thou shalt have, the males, shall pertain to Yahweh. ¹³ But every firstling of an ass, shalt thou redeem with a lamb or if thou wilt not redeem it, then thou shalt break its neck, - but every firstborn of men among thy sons, shalt thou redeem.

¹⁴ And it shall be when thy son shall ask thee in time to come, saying, What is this? Then shalt thou say unto him: With strength of hand, did Yahweh bring us forth out of Egypt out of the house of slaves. ¹⁵ And it came to pass when Pharaoh had shown himself too hardened to let us go, then did Yahweh slay every firstborn in the land of Egypt, from the firstborn of men even unto the firstborn of beasts. For this cause, am, I, sacrificing to Yahweh whatsoever is born first, of the males, and every firstborn of my sons, must I redeem. ¹⁶ And it shall be for a sign upon thy hand, and for frontlets between thine eyes, - that, with strength of hand, did Yahweh bring us forth out of Egypt.