1 Samuel 14:33

Then they told Saul, saying, Behold, the people sin against the LORD, in that they eat with the blood. And he said, Ye have transgressed: roll a great stone unto me this day.

The verse stands in a crisis permitted to rebuke Saul's perversity and to teach Israel humility and faith. Because of Saul's sin in his presumptuous offering, he was denied the honor of defeating the Philistines, and Jonathan, the king's son who feared the Lord, was chosen as the instrument to deliver Israel. Moved by a divine impulse, Jonathan proposed to his armor-bearer a secret attack on the enemy camp in faith that the Lord could save by many or by few. He acted together with his believing, praying armor-bearer, seeking earnest prayer and an agreed sign from God to determine how to proceed.

The people's hunger and faintness followed Saul's rash vow, made without wisdom, forbidding anyone to eat food until evening, after a day of hard labor. Weakened and exhausted, they ate meat with its blood, without draining it, and thereby broke God's command. Saul declared that they had transgressed and ordered a great stone to be rolled to him that day.