Samuel said, Gather all Israel to Mizpah, and I will pray for you to Yahweh.
"They drew water and poured it out, and fasted that day"  (1 Samuel 7:6).  The only other instance in the Bible that resembles this is that of David who would not drink the water which his mighty men, at great risk to themselves, had drawn for him from the well in Bethlehem.  David, "Poured it out to the Lord, and said, `Shall I drink the blood of the men who went at the risk of their lives'"?   (2 Samuel 23:15-16).