2 Samuel 23:14 (KJV)

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!

And the three mighty men brake through the host of the Philistines, and drew water out of the well of Beth–lehem, that was by the gate, and took it, and brought it to David: nevertheless he would not drink thereof, but poured it out unto the Lord.