8 These are the names of the mighty men whom David had: Josheb-basshebeth a Tahchemonite, chief of the captains; the same was Adino the Eznite, against eight hundred slain at one time. 9 And after him was Eleazar the son of Dodai the son of an Ahohite, one of the three mighty men with David, when they defied the Philistines that were there gathered together to battle, and the men of Israel were gone away. 10 He arose, and smote the Philistines until his hand was weary, and his hand clave unto the sword; and Jehovah wrought a great victory that day; and the people returned after him only to take spoil. 11 And after him was Shammah the son of Agee a Hararite. And the Philistines were gathered together into a troop, where was a plot of ground full of lentils; and the people fled from the Philistines. 12 But he stood in the midst of the plot, and defended it, and slew the Philistines; and Jehovah wrought a great victory. 13 And three of the thirty chief men went down, and came to David in the harvest time unto the cave of Adullam; and the troop of the Philistines was encamped in the valley of Rephaim. 14 And David was then in the stronghold; and the garrison of the Philistines was then in Beth-lehem. 15 And David longed, and said, Oh that one would give me water to drink of the well of Beth-lehem, which is by the gate! 16 And the three mighty men brake through the host of the Philistines, and drew water out of the well of Beth-lehem, that was by the gate, and took it, and brought it to David: but he would not drink thereof, but poured it out unto Jehovah. 17 And he said, Be it far from me, O Jehovah, that I should do this: [shall I drink] the blood of the men that went in jeopardy of their lives? therefore he would not drink it. These things did the three mighty men.
Matthew Henry's Commentary on 2 Samuel 23:8-17
Commentary on 2 Samuel 23:8-39
(Read 2 Samuel 23:8-39)
David once earnestly longed for the water at the well of Bethlehem. It seems to be an instance of weakness. He was thirsty; with the water of that well he had often refreshed himself when a youth, and it was without due thought that he desired it. Were his valiant men so forward to expose themselves, upon the least hint of their prince's mind, and so eager to please him, and shall not we long to approve ourselves to our Lord Jesus, by ready compliance with his will, as shown us by his word, Spirit, and providence? But David poured out the water as a drink-offering to the Lord. Thus he would cross his own foolish fancy, and punish himself for indulging it, and show that he had sober thoughts to correct his rash ones, and knew how to deny himself. Did David look upon that water as very precious which was got at the hazard of these men's blood, and shall not we much more value those benefits for purchasing which our blessed Saviour shed his blood? Let all beware of neglecting so great salvation.