Numbers 4:43-45

American Standard Version

⁴³ from thirty years old and upward even unto fifty years old, every one that entered upon the service, for work in the tent of meeting, ⁴⁴ even those that were numbered of them by their families, were three thousand and two hundred. ⁴⁵ These are they that were numbered of the families of the sons of Merari, whom Moses and Aaron numbered according to the commandment of Jehovah by Moses.