Numbers 3:46

And for those that are to be redeemed of the two hundred and seventy and three, of the first-born of the children of Israel, which are more than the Levites:

Exodus 13:13

And every firstling of an ass thou shalt redeem with a lamb; and if thou wilt not redeem it, then thou shalt break his neck: and all the first-born of man among thy children shalt thou redeem.

Numbers 18:15-16

Every thing that openeth the matrix in all flesh, which they bring to the LORD, whether of men or beast, shall be thine: nevertheless, the first born of man shalt thou surely redeem, and the firstling of unclean beasts shalt thou redeem.

Treasury of Scripture Knowledge

Summary

And for those that are to be redeemed of the two hundred and threescore and thirteen of the firstborn of the children of Israel, which are more than the Levites;

Which are

General references

Bible References

Redeemed

Numbers 18:15
Every thing that openeth the matrix in all flesh, which they bring to the LORD, whether of men or beast, shall be thine: nevertheless, the first born of man shalt thou surely redeem, and the firstling of unclean beasts shalt thou redeem.
Exodus 13:13
And every firstling of an ass thou shalt redeem with a lamb; and if thou wilt not redeem it, then thou shalt break his neck: and all the first-born of man among thy children shalt thou redeem.

Which are

Numbers 3:39
All that were numbered of the Levites, whom Moses and Aaron numbered at the commandment of the LORD, throughout their families, all the males from a month old and upward, were twenty and two thousand.

General references

Numbers 3:50
Of the first-born of the children of Israel he took the money; a thousand three hundred and sixty and five shekels, after the shekel of the sanctuary.