2 Samuel 23:8-18

8 These are the names of David's men of war: Ishbaal the Hachmonite, chief of the three; his axe was lifted up against eight hundred put to death at one time.
9 After him was Eleazar, the son of Dodai the Ahohite, one of the three great fighters, who was with David in Pas-dammim when the Philistines came together there for the fight; and when the men of Israel had gone in flight,
10 He was with David and went on fighting the Philistines till his hand became tired and stiff from gripping his sword: and that day the Lord gave a great salvation, and the people came back after him only to take the goods of the Philistines.
11 After him was Shammah, the son of Ela the Hararite. And the Philistines came together in Lehi, where there was a bit of land full of seed; and the people went in flight from the Philistines.
12 But he kept his place in the middle of the bit of land, and kept back their attack and overcame the Philistines: and the Lord gave a great salvation.
13 And three of the thirty went down at the start of the grain-cutting, and they came to David at the strong place of Adullam; and the band of Philistines had taken up their position in the valley of Rephaim.
14 And at that time David had taken cover in the strong place, and an armed force of the Philistines was in Beth-lehem
15 And David, moved by a strong desire, said, If only someone would give me a drink of water from the water-hole of Beth-lehem, by the doorway into the town!
16 And the three men, forcing their way through the Philistine army, got water from the water-hole of Beth-lehem, by the doorway into the town, and took it back to David: but he would not take it, but, draining it out, made an offering of it to the Lord.
17 And he said, Far be it from me, O Lord, to do this; how may I take as my drink the life-blood of men who have put their lives in danger? So he would not take it. These things did the three great men of war.
18 And Abishai, the brother of Joab, the son of Zeruiah, was chief of the thirty. He put to death three hundred with his spear, and he got for himself a name among the thirty.