Numbers 4:46-49

46All the numbered men of the Levites, whom Moses, Aaron, and the leaders of Israel counted, by their families and by their fathers’ households,

47from thirty years old and upward even to fifty years old, everyone who could enter to do the work of service and the work of carrying in the tent of meeting--

48their numbered men were 18,580.

49According to the 2commandment of the Lord 3through Moses, they 4were counted, everyone by his serving or carrying; so these were his numbered men, just as the Lord had commanded Moses.