Numbers 1:3, 50
You and Aaron are to register those who are twenty years of age or older by their divisions--everyone who can serve in Israel's army. . . .

Numbers 2:33
But the Levites were not counted among the other Israelites, as the LORD had commanded Moses.

Numbers 3:1
This is the account of Aaron and Moses at the time the LORD spoke to Moses on Mount Sinai.

Numbers 4:1
Then the LORD said to Moses and Aaron,

Numbers 8:1
Then the LORD said to Moses,

Numbers 26:57-62
Now these were the Levites registered by their clans: The Gershonite clan from Gershon, the Kohathite clan from Kohath, and the Merarite clan from Merari. . . .

1 Chronicles 6:1
The sons of Levi: Gershom, Kohath, and Merari.

1 Chronicles 21:6
But Joab did not include Levi and Benjamin in the count, because the king's command was detestable to him.