2 Samuel 23:11-15

And after him was Shammah the son of Agee the Hararite. And the Philistines were gathered together into a troop, where was a piece of ground full of lentiles: and the people fled from the Philistines.

But he stood in the midst of the ground, and defended it, and slew the Philistines: and the LORD wrought a great victory.

And three of the thirty chief went down, and came to David in the harvest time unto the cave of Adullam: and the troop of the Philistines pitched in the valley of Rephaim.

And David was then in an hold, and the garrison of the Philistines was then in Beth-lehem.

And David longed, and said, Oh that one would give me drink of the water of the well of Beth-lehem, which is by the gate!