1 Samuel 14:28-29, 31-32

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. 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.

And they smote the Philistines that day from Michmash to Aijalon: and the people were very faint. 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.