Exodus 13:14-16

MKJV(i) 14 And it shall be when your sons asks you in time to come, saying, What is this? you shall say to him, Jehovah brought us out of Egypt by the strength of His hand, from the house of bondage. 15 And it happened when Pharaoh hardened himself against sending us, Jehovah killed all the first-born of the land of Egypt, both the first-born of man, and the first-born of animals. Therefore I sacrifice to Jehovah all that opens the womb, that are males. But all the first-born of my sons I redeem. 16 And it shall be for a token upon your hand, and for frontlets between your eyes. For Jehovah brought us out from Egypt by strength of His hand.