Numbers 3:37

33 From Merari came the clans of the Mahlites and Mushites; these were the Merarite clans.

34 The number of all the males a month old or more was 6,200.

35 The leader of the families of the Merarites was Zuriel son of Abihail; they were to camp on the north side of the tabernacle.

36 The duties assigned to the sons of Merari were the tabernacle’s frames, crossbars, posts, bases, and all its equipment—all the service for these items,

37 as well as the posts of the surrounding courtyard with their bases, tent pegs, and ropes.

38 Moses, Aaron, and Aaron’s sons were to camp to the east of the tabernacle, toward the sunrise, before the Tent of Meeting. They were to perform the duties of the sanctuary as a service on behalf of the Israelites; but any outsider who approached the sanctuary was to be put to death.

39 The total number of Levites that Moses and Aaron counted by their clans at the LORD’s command, including all the males a month old or more, was 22,000.

40 Then the LORD said to Moses, “Number every firstborn male of the Israelites a month old or more, and list their names.

41 You are to take the Levites for Me—I am the LORD—in place of all the firstborn of Israel, and the livestock of the Levites in place of all the firstborn of the livestock of the Israelites.”

Read all of Numbers 3