Exodus 34:20

Overview - Exodus 34
1	The tables are renewed.
5	The name of the LORD proclaimed.
8	Moses entreats God to go with them.
10	God makes a covenant with them, repeating certain duties of the first table.
28	Moses, after forty days in the mount, comes down with the tables.
29	His face shines, and he covers it with a vail.

Exodus 34:20  (King James Version)
But the firstling of an ass thou shalt redeem with a lamb: and if thou redeem him not, then shalt thou break his neck. All the firstborn of thy sons thou shalt redeem. And none shall appear before me empty.