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
And every firstling of an ass thou dost ransom with a lamb, and if thou dost not ransom it, then thou hast beheaded it: and every first-born of man among thy sons thou dost ransom.
Exodus 34:20
and the firstling of an ass thou dost ransom with a lamb; and if thou dost not ransom, then thou hast beheaded it; every first-born of thy sons thou dost ransom, and they do not appear before Me empty.
Leviticus 27:27
And if among the unclean beasts, then he hath ransomed it at thy valuation, and he hath added its fifth to it; and if it is not redeemed, then it hath been sold at thy valuation.

General references

Numbers 3:15
'Number the sons of Levi by the house of their fathers, by their families; every male from a son of a month and upward thou dost number them.'