1 Samuel 14:20-33

20 And Saul and all the people that were with him assembled themselves, and they came to the battle: and, behold, every man's sword was against his fellow, and there was a very great discomfiture.
21 Moreover the Hebrews that were with the Philistines before that time, which went up with them into the camp from the country round about, even they also turned to be with the Israelites that were with Saul and Jonathan.
22 Likewise all the men of Israel which had hid themselves in mount Ephraim, when they heard that the Philistines fled, even they also followed hard after them in the battle.
23 So the LORD saved Israel that day: and the battle passed over unto Bethaven.
24 And the men of Israel were distressed that day: for Saul had adjured the people, saying, Cursed be the man that eateth any food until evening, that I may be avenged on mine enemies. So none of the people tasted any food.
25 And all they of the land came to a wood; and there was honey upon the ground.
26 And when the people were come into the wood, behold, the honey dropped; but no man put his hand to his mouth: for the people feared the oath.
27 But Jonathan heard not when his father charged the people with the oath: wherefore he put forth the end of the rod that was in his hand, and dipped it in an honeycomb, and put his hand to his mouth; and his eyes were enlightened.
28 Then answered one of the people, and said, Thy father straitly charged the people with an oath, saying, Cursed be the man that eateth any food this day. And the people were faint.
29 Then said Jonathan, My father hath troubled the land: see, I pray you, how mine eyes have been enlightened, because I tasted a little of this honey.
30 How much more, if haply the people had eaten freely to day of the spoil of their enemies which they found? for had there not been now a much greater slaughter among the Philistines?
31 And they smote the Philistines that day from Michmash to Aijalon: and the people were very faint.
32 And the people flew upon the spoil, and took sheep, and oxen, and calves, and slew them on the ground: and the people did eat them with the blood.
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.