What does 2 Samuel 5:19 mean?

David asked the Lord, 'Should I go attack the Philistines? Will you hand them over to me?' The Lord answered, 'Go ahead. I will definitely hand the Philistines over to you.' 2 Samuel 5:19 - Modern Text Bible

(David seeks God's guidance before acting, and God promises him victory, showing David's dependence on divine direction.)