Numbers 3:46

And for the redeeming of the two hundred and seventy three which are more than the Levites in the firstborn of the children of Israel,

Exodus 13:13

And all the firstborn of the asses, thou shalt redeem with a sheep: if thou redeem him not, then break his neck. But all the firstborn among thy children shalt thou buy out.

Numbers 18:15-16

All that breaketh the matrix of all flesh that men bring unto the LORD, both of man and beast, shall be thine. Neverthelater, the firstborn of man shall be redeemed, and the firstborn of unclean beasts shall be redeemed.

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
All that breaketh the matrix of all flesh that men bring unto the LORD, both of man and beast, shall be thine. Neverthelater, the firstborn of man shall be redeemed, and the firstborn of unclean beasts shall be redeemed.
Exodus 13:13
And all the firstborn of the asses, thou shalt redeem with a sheep: if thou redeem him not, then break his neck. But all the firstborn among thy children shalt thou buy out.

Which are

Numbers 3:39
And the whole sum of the Levites which Moses and Aaron numbered, at the commandment of the LORD - throughout their kindreds, even of all the males of a month old and above - was twenty two thousand.

General references

Numbers 3:50
among the firstborn of the children of Israel: and it came to a thousand three hundred and sixty five sicles, of the holy sicle.