Numbers 3:43-51

43and all the firstborn males by the number of names from a month old and upward, for their numbered men were 122,273.

44Then the Lord spoke to Moses, saying, 45“2Take the Levites instead of all the firstborn among the sons of Israel and the cattle of the Levites. And the Levites shall be Mine; I am the Lord. 463For the ransom of the 273 of the firstborn of the sons of Israel who are in excess beyond the Levites, 47you shall take 4five shekels apiece, per head; you shall take them in 5terms of the shekel of the sanctuary (6the shekel is twenty 7gerahs), 48and give the money, the ransom of those who are in excess among them, to Aaron and to his sons.” 49So Moses took the ransom money from those who were in excess, beyond those ransomed 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 ransom money to Aaron and to his sons, at the 8command of the Lord, just as the Lord had commanded Moses.