1 Samuel 8:12

8:12 He will appoint for himself leaders of thousands and leaders of fifties, as well as those who plow his ground, reap his harvest, and make his weapons of war and his chariot equipment.

1 Samuel 18:30

18:30 Then the leaders of the Philistines would march out, and as often as they did so, David achieved more success than all of Saul’s servants. His name was held in high esteem.