CAB(i)
14 And if later on your son should ask you, saying, What is this? Then you shall say to him, With a strong hand the Lord brought us out of Egypt, out of the house of bondage.
15 And when Pharaoh hardened his heart so as not to send us away, He slew every firstborn in the land of Egypt, both the firstborn of man and the firstborn of beast; therefore I sacrifice every offspring that opens the womb, the males to the Lord, and every firstborn of my sons I will redeem.
16 And it shall be for a sign upon your hand, and immovable before your eyes, for with a strong hand the Lord has brought you out of Egypt.