David was thirsty and said, “How I wish someone would give me some water to drink from the cistern in Bethlehem near the city gate!”

So the three elite warriors broke through the Philistine forces and drew some water from the cistern in Bethlehem near the city gate. They carried it back to David, but David refused to drink it. He poured it out as a drink offering to the Lord

Benaiah son of Jehoiada was a brave warrior from Kabzeel who performed great exploits. He struck down the two sons of Ariel of Moab; he also went down and killed a lion inside a cistern on a snowy day.