It's a very Aboriginal thing to do, to give younger people greater responsibilities within the community as they become able to take those responsibilities on. It is a culturally appropriate transfer of roles that involves respect in both directions. . from the younger to the older and the older to the younger.
Though He did what he could to help the multitudes, He had to devote Himself primarily to a few men, rather than the masses, so that the masses could at last be saved. This was the genius of his strategy.