Numbers 4:21-23

21st Century King James Version

²¹ And the Lord spoke unto Moses, saying,

²² “Take also the sum of the sons of Gershon, throughout the houses of their fathers, by their families.

²³ From thirty years old and upward until fifty years old shalt thou number them, all who enter in to perform the service, to do the work in the tabernacle of the congregation.