Numbers 3:46

Amplified Bible

For the ransom (redemption price) of the 273 of the firstborn of the Israelites who outnumber the Levites,

Cross References

Exodus 13:13

Every firstborn of a donkey you shall redeem by [substituting] a lamb [as a sacrifice for it], but if you do not [wish to] redeem it, then you shall break its neck; and every firstborn among your sons you shall redeem [that is, ‘buy back’ from God with a suitable sacrifice].

Exodus 13:15

For it happened, when Pharaoh stubbornly refused to let us go, that the Lord struck every firstborn in the land of Egypt, both the firstborn of man and the firstborn of animal. Therefore, I sacrifice to the Lord all the males, the first [to be born] of every womb, but every firstborn of my sons I redeem.’