1 Chronicles 11:15-20

15And three of the thirty chiefs went down to the rock to David, to the cave of Adullam, when the army of the Philistines was encamped in the valley of Rephaim.

16And David was then in the stronghold; and the Philistines' garrison was then at Bethlehem.

17And David longed, and said, Oh that one would give me to drink of the water of the well of Bethlehem, which is in the gate!

18And the three broke through the camp of the Philistines, and drew water out of the well of Bethlehem, which is in the gate, and took it, and brought it to David; David however would not drink of it, but poured it out to Jehovah.

19And he said, My 1God forbid it me, that I should do this thing! should I drink the blood of these men [who went] at the risk of their lives? for at the risk of their lives they brought it. Therefore he would not drink it. These things did the three mighty men.

20And Abishai the brother of Joab, he was the chief of three; and he brandished his spear against three hundred and slew them; and he had a name among the three.