2 Samuel 23:13-17

13Then three of the thirty chief men went down and came to David at harvest time to the 1cave of Adullam, while the army of the Philistines was camping in 2the Valley of Rephaim. 14David was then 3in the stronghold, while the garrison of the Philistines was then in Bethlehem. 15And 4David had a craving and said, “Oh that someone would give me water to drink from the well of Bethlehem which is by the gate!” 165So the three mighty men forced their way into the camp of the Philistines, and drew water from the well of Bethlehem which was by the gate, and carried it and brought it to David. Yet he would not drink it, but 6poured it out as an offering to the Lord; 17and he said, “Far be it from me, Lord, that I would do this! 7Should I drink the blood of the men who went at the risk of their lives?” So he would not drink it. These things the three mighty men did.