1 Samuel 11:8

He numbered them in Bezek . This place was in the tribe of Issachar, and must be distinguished from that mentioned in 1:3 , 1:4 , which was in Judah, and too remote from the scene of operations. And here Saul appears as the commander-in-chief; for the numbering included the forming of battalions, arranged in thousands, hundreds, and fifties, and the setting officers over them. These, naturally, were the chief men in each district. The result would be that, coming to Bezek, the appointed rendezvous, a disorderly multitude, they would leave it as an army arranged in order, and Saul, in the many difficulties that would arise, would have his first opportunity of showing his powers of command. Children of Israel,… men of Judah— the distinction which ended in the disruption of the nation. Judah, too, with its 30,000 men, is but poorly represented, nor is it a sufficient explanation of the small number who came that the tribe had enough to do at home in making head against the Philistines. As a matter of fact, Judah always stood apart until there was a king who belonged to itself. Then, in David's time, it first took an active interest in the national welfare, and it was its vast power and numbers which made him so powerful. Had it been so nearly overpowered by the Philistines, it could not so suddenly have sprung forth with a might which made it well nigh a match for all the rest.