The Work the Levite Them Use to Do

Jehovah choose the Levites instead of all the firstborn boy children in Israel (Nu 3:​11-13; it-2-E 683 ¶3)

Jehovah give the Levites special work to do (Nu 3:​25, 26, 31, 36, 37; it-2-E 241)

The Levite them can start doing their real-real work between 30 to 50 year old (Nu 4:​46-48; it-2-E 241)

That the man them in Aaron family were the priest. The other Levites use to help them to do their work. That the same way today too we get some qualify brother them in the congregation that taking care of important assignments. Then they get other brother them there helping them to do their work.