Numbers 4:43

43 from a son of thirty years and upward even unto a son of fifty years, every one who is going in to the host, for service in the tent of meeting,

Numbers 4:43 In-Context

41 These [are] those numbered of the families of the sons of Gershon, every one who is serving in the tent of meeting, whom Moses and Aaron numbered by the command of Jehovah.
42 And those numbered of the families of the sons of Merari, by their families, by the house of their fathers,
43 from a son of thirty years and upward even unto a son of fifty years, every one who is going in to the host, for service in the tent of meeting,
44 even their numbered ones, by their families, are three thousand and two hundred.
45 These [are] those numbered of the families of the sons of Merari, whom Moses and Aaron numbered, by the command of Jehovah, by the hand of Moses.
Young's Literal Translation is in the public domain.