Joshua 1:13-14

Which Moses commanded you His charge to you, and your promise to him. Rest That is, a place of rest, as that word signifies. Before your brethren In the front of all of them; which was but reasonable; because they had the advantage of their brethren, having actually received their portion, which their brethren had only in hope; because they were freed from those impediments which the rest were exposed to, their wives, and children, and estates being safely lodged; and to prevent their withdrawing themselves from the present service, which they otherwise would have had temptations to do, because of the nearness of their habitations. Armed For by this time they were well furnished with arms, which they had either from the Egyptians, Amalekites, or Amorites, from whom they had taken them; or, by purchase, from those people by whose borders they passed. Men of valour All such were obliged to go over, if occasion required it, but Joshua took only some of them, because they were sufficient for his purpose, and because it was proper some should be left, both to secure their own wives, children, and possessions, and to prevent their enemies on that side from giving them disturbance while engaged in their enterprise upon Canaan.