Numbers 8:22

22.And after that went the Levites in to do their service In these words Moses signifies that, in the type, nothing was omitted relative to the ancient priesthood which pertains to the legitimate service of God, the main point in which is obedience, and thence the purity which flows from it. The Levites are said to have done their service before Aaron, because they humbly submitted themselves to the yoke, and allowed themselves to be controlled by the will of the priest, since God had so enjoined. But the progress of the history will presently shew how prone man’s nature is to rebellion. Hence it arises that the end does not always correspond with the beginning, but that sad and unhappy conclusions sometimes follow successful commencements.