2 Samuel 23:9-16

9And after him was Eleazar the son of Dodai the son of an Ahohite, one of the three mighty men with David, when they defied the Philistines that were there gathered together to battle, and the men of Israel were gone away. 10He arose, and smote the Philistines until his hand was weary, and his hand clave unto the sword; and Jehovah wrought a great victory that day; and the people returned after him only to take spoil.

11And after him was Shammah the son of Agee a Hararite. And the Philistines were gathered together into a troop, where was a plot of ground full of lentils; and the people fled from the Philistines. 12But he stood in the midst of the plot, and defended it, and slew the Philistines; and Jehovah wrought a great victory.

13And three of the thirty chief men went down, and came to David in the harvest time unto the cave of Adullam; and the troop of the Philistines was encamped in the valley of Rephaim. 14And David was then in the stronghold; and the garrison of the Philistines was then in Beth-lehem. 15And David longed, and said, Oh that one would give me water to drink of the well of Beth-lehem, which is by the gate! 16And 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: but he would not drink thereof, but poured it out unto Jehovah.