Exodus 13:16

13 And for the young of an ass you may give a lamb in payment, or if you will not make payment for it, its neck is to be broken; but for all the first sons among your children, let payment be made.

14 And when your son says to you in time to come, What is the reason for this? say to him, By the strength of his hand the Lord took us out of Egypt, out of the prison-house:

15 And when Pharaoh made his heart hard and would not let us go, the Lord sent death on all the first sons in Egypt, of man and of beast: and so every first male who comes to birth is offered to the Lord; but for all the first of my sons I give a price.

16 And this will be for a sign on your hand and for a mark on your brow: for by the strength of his hand the Lord took us out of Egypt.

17 Now after Pharaoh had let the people go, God did not take them through the land of the Philistines, though that was near: for God said, If the people see war, they may have a change of heart and go back to Egypt.

18 But God took the people round by the waste land near the Red Sea: and the children of Israel went up in fighting order out of the land of Egypt.

19 And Moses took the bones of Joseph with him, for Joseph had made the children of Israel take an oath, saying, God will certainly keep you in mind; and you are to take my bones away with you.