So David inquired of the LORD, saying, "Shall I go up against the Philistines? Will You deliver them into my hand?" And the LORD said to David, "Go up, for I will doubtless deliver the Philistines into your hand."
2 Samuel 5:19
Surrounding context
5:18 The Philistines also went and deployed themselves in the Valley of Rephaim.
5:19 So David inquired of the LORD, saying, "Shall I go up against the Philistines? Will You deliver them into my hand?" And the LORD said to David, "Go up, for I will doubtless deliver the Philistines into your hand."
5:20 So David went to Baal Perazim, and David defeated them there; and he said, "The LORD has broken through my enemies before me, like a breakthrough of water." Therefore he called the name of that place Baal Perazim.