Care is here taken to distinguish from the rest of the tribes the tribe of Levi, which, in the matter of the golden calf, had distinguished itself, Exo 32:26. Note, Singular services shall be recompensed with singular honours. Now,
I. It was the honour of the Levites that they were made guardians of the spiritualities; to them was committed the care of the tabernacle and the treasures thereof, both in their camps and in their marches. 1. When they moved the Levites were to take down the tabernacle, to carry it and all that belonged to it, and then to set it up again in the place appointed, Num 1:50, Num 1:51. It was for the honour of the holy things that none should be permitted to see them, or touch them, but those only who were called of God to the service. Thus we all are unfit and unworthy to have fellowship with God until we are first called by his grace into the fellowship of his Son Jesus Christ our Lord, and so, being the spiritual seed of that great high priest, are made priests to our God; and it is promised that God would take Levites to himself, even from the Gentiles, Isa 66:21. 2. When they rested the Levites were to encamp round about the tabernacle (Num 1:50, Num 1:53), that they might be near their work, and resident upon their charge, always ready to attend, and that they might be a guard upon the tabernacle, to preserve it from being either plundered or profaned. They must pitch round about the tabernacle, that there be no wrath upon the congregation, as there would be if the tabernacle and the charge of it were neglected, or those crowded upon it that were not allowed to come near. Note, Great care must be taken to prevent sin, because the preventing of sin is the preventing of wrath.
II. It was their further honour that as Israel, being a holy people, was not reckoned among the nations, so they, being a holy tribe, were not reckoned among other Israelites, but numbered afterwards by themselves, Num 1:49. The service which the Levites were to do about the sanctuary is called (as we render it in the margin) a warfare, Num 4:23. And, being engaged in that warfare, they were discharged from military services, and therefore not numbered with those that were to go out to war. Note, Those that minister about holy things should neither entangle themselves, nor be entangled, in secular affairs. The ministry is itself work enough for a whole man, and all little enough to be employed in it. It is an admonition to ministers to distinguish themselves by their exemplary conversation from common Israelites, not affecting to seem greater, but aiming to be really better, every way better than others.

And the children of Israel did according to all the Lord commanded Moses,.... Pitched their tents by their own camps and standards; did not come near the tabernacle but kept at a proper distance from it, and did not meddle with things they had no concern, with, and which were peculiar to the Levites:

so they did; which is repeated to show how readily, punctually, and perfectly they observed the command of God with respect to this affair.

Next: Numbers Chapter 2

But the Levites . . . were not numbered among them--They were obliged to keep a register of their own. They were consecrated to the priestly office, which in all countries has been exempted customarily, and in Israel by the express authority of God, from military service. The custody of the things devoted to the divine service was assigned to them so exclusively, that "no stranger"--that is, no person, not even an Israelite of any other tribe, was allowed, under penalty of death, to approach these [Num 16:40]. Hence they encamped round the tabernacle in order that there should be no manifestation of the divine displeasure among the people. Thus the numbering of the people was subservient to the separation of the Levites from those Israelites who were fit for military service, and to the practical introduction of the law respecting the first-born, for whom the tribe of Levi became a substitute [Exo 13:2; Num 3:12].

Next: Numbers Chapter 2