Numbers 4:43-45

Amplified Bible

⁴³ from thirty years and upward even to fifty years old, everyone who entered the service for work in the Tent of Meeting (tabernacle); ⁴⁴ the men who were numbered by their families were 3,200. ⁴⁵ These are the men who were numbered of the families of the sons of Merari, whom Moses and Aaron numbered in accordance with the commandment of the Lord through Moses.