Numbers 4:44

⁴²And also the family of the sons of Merari were numbered according to their divisions, according to the house of their fathers;

⁴³from five and twenty years old and upward till fifty years old, everyone that goes in to minister in the services of the tabernacle of witness.

— Numbers 4:44 —

⁴⁵This is the numbering of the family of the sons of Merari, whom Moses and Aaron numbered by the word of the Lord, by the hand of Moses.

⁴⁶All that were numbered, whom Moses and Aaron and the rulers of Israel numbered, namely, the Levites, according to their families and according to the houses of their lineage,