Exodus 13:13

13 And every firstborn of an ass thou shalt ransom with a lamb; and if thou wilt not ransom it, then thou shalt cut off its head; and in the same manner thou shalt ransom all the human firstborn among thy sons.

Exodus 13:13 Meaning and Commentary

Exodus 13:13

And every firstling of an ass thou shalt redeem with a lamb,
&c.] Which was given to the priest for it; and according to the Jewish canon F6, it might be redeemed with that only;

``not with a calf, nor with an animal (a goat or a ram, as Bartenora interprets it), nor with a lamb slain, or torn to pieces.''
Jarchi thinks the ass only was to be redeemed, and not the firstling of any other unclean creature, but his reasons are insufficient; all unclean creatures, as horses, camels, dogs, swine are included in it, as should seem from ( Numbers 18:15 ) and this is the rather particularly mentioned, because there was a greater plenty of them than of horses and camels, and because they were very useful creatures; and if these were to be redeemed, then much more those of less value, and less useful. Hence might arise the story and calumny, as some have thought, of the Jews worshipping an ass's head: and if thou wilt not redeem it, then thou shall break its neck;
cut off its head on the back of the neck with a knife or cleaver, such as butchers use, as the Misnah F7, and its commentators, interpret it, so that the owner should have no profit by it: and all the firstborn of man amongst thy children shall thou redeem;
with the price of five shekels of the sanctuary, and within thirty days of the birth of it, ( Numbers 18:16 ) and these being to be redeemed as the unclean beasts were, shows that men are by nature unclean, and even the firstborn, whose names are written in heaven, the elect of God, and need redemption by the blood of the Lamb.
FOOTNOTES:

F6 Misn. Becorot, sect. 1. sect. 5.
F7 lbid. sect. 7. Maimon & Bartenora in ib.

Exodus 13:13 In-Context

11 And it shall be when the LORD shall have brought thee into the land of the Canaanites, as he swore unto thee and to thy fathers, and shall have given it to thee,
12 that thou shalt set apart unto the LORD all that opens the womb and in the same manner every firstborn that opens the wombs of thy animals; the males shall be the LORD’s.
13 And every firstborn of an ass thou shalt ransom with a lamb; and if thou wilt not ransom it, then thou shalt cut off its head; and in the same manner thou shalt ransom all the human firstborn among thy sons.
14 And it shall be when thy son asks thee in time to come, saying, What is this? Thou shalt say unto him, With a strong hand the LORD brought us out of Egypt, from the house of slavery;
15 and it came to pass when Pharaoh was hardening himself to not let us go that the LORD slew all the firstborn in the land of Egypt from the human firstborn to the firstborn of the beast; therefore, I sacrifice to the LORD every male that opens the womb, and I ransom every firstborn of my sons.
The Jubilee Bible (from the Scriptures of the Reformation), edited by Russell M. Stendal, Copyright © 2000, 2001, 2010