Numbers 1:22

1:22 From the descendants of Simeon: According to the records of their clans and families, all the males numbered of them twenty years old or older who could serve in the army were listed by name individually.

Numbers 1:50

1:50 But appoint the Levites over the tabernacle of the testimony, over all its furnishings and over everything in it. They must carry the tabernacle and all its furnishings; and they must attend to it and camp around it.

Numbers 4:27

4:27 “All the service of the Gershonites, whether carrying loads or for any of their work, will be at the direction of Aaron and his sons. You will assign them all their tasks as their responsibility.

Numbers 14:18

14:18 ‘The Lord is slow to anger and abounding in loyal love, forgiving iniquity and transgression, but by no means clearing the guilty, visiting the iniquity of the fathers on the children until the third and fourth generations.’