Getting smart and keep clear mind to serve the Lord

Numbers 4:29-49
The men from 30-50 years of age of Merarites their work at the Tent of Meeting are carry the frames of the tabernacle its crossbars posts and bases as well as the posts of the surrounding courtyard with their bases... They under the director of Ithamar son of Aaron, the priest.
Number of Kohathites is 2,750,Gershonites is 2,630 and Merarites is 3,200. Total is 8,580.
Wagons drawn by a yoke of oxen are provided for the Gershonites and Merarites.
Why?
The Tent of Meeting need those Levites to serve for moving. Each clan take their responsibility, they are obey the Lord's command through Moses.
How?
Count everything in my responsibility. Don't mass or unknown to do the job. Getting smart and keep clear mind to serve the Lord.