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
Every firstling of a donkey you must redeem with a lamb, and if you do not redeem it, then you must break its neck. Every firstborn of your sons you must redeem.
Exodus 34:20
Now the firstling of a donkey you may redeem with a lamb, but if you do not redeem it, then break its neck. You must redeem all the firstborn of your sons. "No one will appear before me empty-handed.
Leviticus 27:27
If, however, it is among the unclean animals, he may ransom it according to its conversion value and must add one fifth to it, but if it is not redeemed it must be sold according to its conversion value.
General references
Numbers 3:15
"Number the Levites by their clans and their families; every male from a month old and upward you are to number."