Numbers 4:49

According to the commandment of the Lord they were numbered by the hand of Moses, at his direction, every one according to his service and according to his burden, according to the things that were laid upon him at the mustering; thus were they numbered of him, as the Lord commanded Moses. They were told exactly what their individual duty consisted in, and could go ahead in an almost automatic manner. Such a wise distribution of burdens is to be recommended to this day in the Church of Christ; it makes for better work in the Lord's vineyard.