Numbers 4:43-45

Revised Standard Version

⁴³ from thirty years old up to fifty years old, every one that could enter the service, for work in the tent of meeting— ⁴⁴ their number by families was three thousand two hundred. ⁴⁵ These are those who were numbered of the families of the sons of Merar′i, whom Moses and Aaron numbered according to the commandment of the Lord by Moses.