In order to regulate the levy, Joab, the chief captain, with some of his subordinates, was commanded to enumerate and write down all the fighting men from the Jabbok to Mount Hermon, and from Dan to Beersheba. Nine months and twenty days were required by the captains for this task. When the muster was completed, captains were appointed for hundreds and thousands; but in order that the whole mass of the people need not be called out on every campaign and every attack of the enemy,--in which hitherto, for the most part, only those who were eager for battle had engaged, while those who preferred peace and rest remained at home,--the whole number of the fighting men was divided into twelve portions, of which each, in number 24,000 men, was pledged to service for one month in the year. Each of these divisions had a separate captain. As occasion required, several of the divisions, or all, might be called out. If we may trust these accounts, Israel had at that time 300,000 fighting men, and consequently a population of about two millions.[302] Hitherto the descendants of the oldest families, the heads of the tribes, the successors of those who in the conquest of the land had won for themselves separate localities and valleys, had enjoyed a pre-eminent position within the circle of the various tribes (p. 91). To them, or to brave warriors, the Israelites had gone,--to men who had become of importance owing to their possessions, and who had the reputation of passing sound judgments,--or to priests and soothsayers, when they sought for advice, protection, and justice. Since the establishment of the monarchy the king was the supreme judge. David exercised this office as Saul had done.[303] But though he retained the right of deciding in the last instance, David seems to have appointed the princes and judges of the tribes; he charged certain of his adherents with the duty of giving justice to the tribes and communities, although, of course, every man had the right of appeal from his decision to the decision of the king. Jurisdiction and administration not yet being separated, we may suppose that a regular government, which secured to the throne the execution of its will and of the orders given, was established by this means already in David's reign. We find that, beside the captains of the army, the officers of the house and treasury, the king had a chancellor, a scribe, and overseer of the taxes. Ahithophel was the man on whose advice David mainly depended; his most trusted friend was Hushai; and in the last twenty years of his life the prophet Nathan enjoyed a high place in his favour.[304]