1 Chronicles 11:13-17

He was with David at Pas-dammim when the Philistines were gathered together there to battle, and there was a plot of land full of barley; and the people fled from the Philistines.

But they took their stand in the midst of the plot and defended it, and defeated the Philistines; and the Lord saved them with a great victory.

Now three of the thirty chief men went down to the rock to David, into the cave of Adullam, while the army of the Philistines was camping in the Valley of Rephaim.

David was then in the stronghold, while the garrison of the Philistines was then in Bethlehem.

And David had a craving and said, “Oh that someone would give me water to drink from the well of Bethlehem, which is by the gate!”