1 Chronicles 11:16-19

16And David was then in the hold, and the garrison of the Philistines was then in Beth-lehem.

17And David longed, and said, Oh that one would give me water to drink of the well of Beth-lehem, which is by the gate!

18And the three 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 David would not drink thereof, but poured it out unto the LORD,

19and said, My God forbid it me, that I should do this: shall I drink the blood of these men that have put their lives in jeopardy? for with the jeopardy of their lives they brought it. Therefore he would not drink it. These things did the three mighty men.