1 Chronicles 11:15-19

Once, three of the Thirty, David’s chief soldiers, came down to him at the rock by the cave near Adullam. At the same time the Philistine army had camped in the Valley of Rephaim. At that time David was in a stronghold, and some of the Philistines were in Bethlehem. David had a strong desire for some water. He said, “Oh, I wish someone would get me water from the well near the city gate of Bethlehem!” So the Three broke through the Philistine army and took water from the well near the city gate in Bethlehem. Then they brought it to David, but he refused to drink it. He poured it out before the LORD, saying, “May God keep me from drinking this water! It would be like drinking the blood of the men who risked their lives to bring it to me!” So David refused to drink it. These were the brave things that the three warriors did.