This one saying proves the incomparable greatness of Moses' character. Little souls are monopolists. They like to be good and gifted, because it gives them a kind of superiority to others; but they dislike to see a levelling-up process at work by which the Eldads and Medads are lifted to stand by their side.
This was the mistake of Joshua. - When he heard that Eldad and Medad prophesied in the camp, he said, "My lord Moses, forbid them!" But he was immature, a saint in the process of manufacture, and smitten with jealousy, for the sake of his master and friend.
This was the complaint of John's disciples, when they saw the crowds ebbing away from their great teacher.
This was the quarrel of the Pharisees, that Jesus made religion so cheap and accessible to all, that even the publicans and sinners received His priceless wares.
But when a man is really great and good, he longs that all should be as he is, and better; he takes a deep delight in the spread of vital godliness; he is glad when others are endowed with greater gifts than himself, that they may make the Gospel better known than he could ever do; he is content to decrease, if Christ may only increase; he is willing that affliction should be added to his bonds, if only Christ may be magnified; he prays that the Lord would put His Spirit on all His people. This is very unnatural to any of us; but God, the Holy Spirit, waits to baptize us even into this, and to make the glory of God the object of our life. Make haste, O blessed Paraclete, and do this for me!