Numbers 3:48

Catholic Public Domain Version

And you shall give the money to Aaron and his sons as the price of those that are in excess."

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you shall take five shekels for each head, by the measure of the Sanctuary. A shekel has twenty obols.

Therefore, Moses took the money for those that were in excess, and whom they had redeemed from the Levites

And he gave it to Aaron and his sons, according to the word by which the Lord had instructed him.