CLV(i)
14 When it comes to be that your son is asking you tomorrow, saying: What does this mean? then you will say to him, With steadfastness of hand Yahweh brought us forth from Egypt, from the house of servants.
15 When it came to be that Pharaoh was obstinate to dismiss us, then Yahweh killed every firstborn in the land of Egypt, from the firstborn of human unto the firstborn of beast. Therefore I am sacrificing to Yahweh all the males opening up the womb; yet I am ransoming every firstborn of my sons.
16 Now it comes to be as a sign on your hand and as brow-bands between your eyes; for with steadfastness of hand Yahweh brought us forth from Egypt.