2 Samuel 23:13-17

13At the time of the harvest, three of David's 30 bravest soldiers went to be with David near Adullam. He was hiding there in a cave. A group of Philistine soldiers had made their camp in Rephaim valley.

14David was in his strong safe place. A group of Philistine soldiers had made their home in Bethlehem.

15David was very thirsty. He said, ‘I want someone to bring water from the well near Bethlehem's gate for me to drink.’

16So the three brave soldiers fought through the Philistine camp and they reached Bethlehem's gate. They took some water from the well there and they carried it back to David. But he refused to drink it. He poured it on the ground as an offering to the Lord.

17He said, ‘Lord, it is not right for me to drink this water. It would seem like the blood of the men who fetched it for me. The Philistines might have killed them on the way.’ So David refused to drink it. Those were some of the great things that the three brave soldiers did.