Treasury of Scripture Knowledge
Summary
Every thing that openeth the matrix in all flesh, which they bring unto the LORD, whether it be of men or beasts, shall be thine: nevertheless the firstborn of man shalt thou surely redeem, and the firstling of unclean beasts shalt thou redeem.
The firstborn
General references
Bible References
The firstborn
Exodus 13:13
You are to redeem every firstborn donkey with a lamb, and if you don't redeem it, you are to break its neck. You are to redeem every firstborn among your sons.
Exodus 34:20
You are to redeem the firstborn of a donkey with a sheep, and if you don't redeem it, you are to break its neck. You are to redeem every firstborn of your sons, and no one is to appear before me empty-handed.
Leviticus 27:27
If it's an unclean animal, then he is to ransom it according to your valuation, adding a fifth to it. If it's not redeemed, then it is to be sold according to your valuation.
General references
Numbers 3:15
"Number the descendants of Levi according to their ancestral houses and tribes, numbering every male from a month old and above."