14-31. Number the children of Levi—They were numbered as well as the other tribes; but the enumeration was made on a different principle—for while in the other tribes the number of males was calculated from twenty years and upward [Nu 1:3], in that of Levi they were counted "from a month old and upward." The reason for the distinction is obvious. In the other tribes the survey was made for purposes of war [Nu 1:3], from which the Levites were totally exempt. But the Levites were appointed to a work on which they entered as soon as they were capable of instruction. They are mentioned under the names of Gershon, Kohath, and Merari, sons of Levi, and chiefs or ancestral heads of three subdivisions into which this tribe was distributed. Their duties were to assist in the conveyance of the tabernacle when the people were removing the various encampments, and to form its guard while stationary—the Gershonites being stationed on the west, the Kohathites on the south, and the families of Merari on the north. The Kohathites had the principal place about the tabernacle, and charge of the most precious and sacred things—a distinction with which they were honored, probably, because the Aaronic family belonged to this division of the Levitical tribe. The Gershonites, being the oldest, had the next honorable post assigned them, while the burden of the drudgery was thrown on the division of Merari.

     32. chief—rather, "chiefs" of the Levites. Three persons are mentioned as chiefs of these respective divisions [Nu 3:24, 30, 35]. And Eleazar presided over them; whence he is called "the second priest" (2Ki 25:18); and in the case of the high priest's absence from illness or other necessary occasions, he performed the duties (1Ki 4:4).

     38. those that encamp, &c.—That being the entrance side, it was the post of honor, and consequently reserved to Moses and the priestly family. But the sons of Moses had no station here.

     5-9. There shall not any man be able to stand before thee—Canaan was theirs by a divine grant; and the renewed confirmation of that grant to Joshua when about to lead the people into it, intimated not only a certain but an easy conquest. It is remarkable, however, that his courage and hope of victory were made to depend (see on De 17:18) on his firm and inflexible adherence to the law of God, not only that regarding the extirpation of the Canaanites, but the whole divine code.

     3. keep the charge of the Lord thy God—that is, the divine law in all its ceremonial as well as moral requirements. But particular reference was intended to its political institutions, as it was only by strictly maintaining the conduct that became the Hebrew monarch (De 17:10-20), that he would secure the blessing of peace and prosperity to his reign (see on De 4:5; De 29:10).