Numbers 3:40-51

40Then the Lord said to Moses, “1Count every firstborn male of the sons of Israel from a month old and upward, and 2make a list of their names. 41And you 3shall take the Levites for Me--I am the Lord--instead of all the firstborn among the sons of Israel; and the cattle of the Levites in place of all the firstborn among the cattle of the sons of Israel.” 42So Moses counted all the firstborn among the sons of Israel, just as the Lord had commanded him; 43and all the firstborn males, by the number of names from a month old and upward for their numbered men, were 422,273.

44Then the Lord spoke to Moses, saying, 45“5Take the Levites in place of all the firstborn among the sons of Israel, and the cattle of the Levites in place of their cattle. And the Levites shall be Mine; I am the Lord. 466And as 7a redemption price for the 273 of the firstborn of the sons of Israel who are in excess of the number of the Levites, 47you shall take 8five shekels apiece, per head; you shall take them in 9terms of the shekel of the sanctuary (10the shekel is twenty 11gerahs), 48and you shall give the money, the redemption price of those who are in excess among them, to Aaron and to his sons.” 49So Moses took the redemption money from those who were in excess of the number of those redeemed by the Levites; 50from the firstborn of the sons of Israel he took the money in terms of the shekel of the sanctuary, 1,365. 51Then Moses gave the redemption money to Aaron and to his sons, at the 12command of the Lord, just as the Lord had commanded Moses.