And David inquired of God, saying, Shall I go up against the Philistines? and will you deliver them into my hand? And the LORD said unto him,
Go up; for I will deliver them into your hand.
Read Chapter 14
David consulted the Lord: David never waged war unless he was driven to it. Thus prudence was combined in him with fortitude in the battle. For even when about to fight single-handed against Goliath, the enormous giant, he rejected the armor with which he was laden. 1Sam 15:17 His strength depended more on his own arm than on the weapons of others. Then, at a distance, to get a stronger throw, with one cast of a stone, he slew his enemy. After that he never entered on a war without seeking counsel of the Lord. Thus he was victorious in all wars, and even to his last years was ready to fight. And when war arose with the Philistines, he joined battle with their fierce troops, being desirous of winning renown, whilst careless of his own safety. 2Sam 21:15 (St. Ambrose Duties of the Clergy 35.177)