1 Chronicles 11:16

13 He was with David at Pasdammim, and there the Philistines were gathered together to battle, where there was a plot of ground full of barley; and the people fled from before the Philistines.

14 They stood in the middle of the plot, defended it, and killed the Philistines; and the LORD saved them by a great victory.

15 Three of the thirty chief men went down to the rock to David, into the cave of Adullam; and the army of the Philistines were encamped in the valley of Rephaim.

16 David was then in the stronghold, and the garrison of the Philistines was in Bethlehem at that time.

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

18 The three broke through the army of the Philistines, and drew water out of the well of Bethlehem that was by the gate, took it, and brought it to David; but David would not drink any of it, but poured it out to the LORD,

19 and said, “My God forbid me, that I should do this! Shall I drink the blood of these men who have put their lives in jeopardy?” For they risked their lives to bring it. Therefore he would not drink it. The three mighty men did these things.