And David rose up early in the morning, and left the sheep with a keeper, and took, and went, as Jesse had commanded him; and he came to the trench, as the host was going forth to the fight, and shouted for the battle.
David ... left the sheep with a keeper, х shomeer (H8104)] - a watchman, and hence, a shepherd. This is the only instance in which the hired shepherd is distinguished from the master or one of the family.
Trench, х hama`gaalaah (H4570), the wagon-rampart] - some rude attempt at a rampart, formed by a line of carts or chariots, which from the earliest times was the practice of nomad people (see the note at Judges 7:20).
As the host ... shouted for the battle - i:e., he heard as he arrived the well-known war cry of Israel (cf. Numbers 23:21; Joshua 6:5; Judges 7:20).