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.

General references

Bible References

The firstborn

Exodus 13:13
But every first offspring of a donkey you shall redeem with a lamb, but if you do not redeem it, then you shall break its neck; and every firstborn of man among your sons you shall redeem.
Exodus 34:20
You shall redeem with a lamb the first offspring from a donkey; and if you do not redeem it, then you shall break its neck. You shall redeem all the firstborn of your sons. None shall appear before Me empty-handed.
Leviticus 27:27
But if it is among the unclean animals, then he shall redeem it according to your valuation and add to it one-fifth of it; and if it is not redeemed, then it shall be sold according to your valuation.

General references

Numbers 3:15
Number the sons of Levi by their fathers’ households, by their families; every male from a month old and upward you shall number.”