1Sam 14:31-35

31After they had struck down the Philistines that day from Michmash to Aijalon, the troops were very faint;32so the troops flew upon the spoil, and took sheep and oxen and calves, and slaughtered them on the ground; and the troops ate them with the blood.33Then it was reported to Saul, “Look, the troops are sinning against the Lord by eating with the blood.” And he said, “You have dealt treacherously; roll a large stone before me here.”34Saul said, “Disperse yourselves among the troops, and say to them, ‘Let all bring their oxen or their sheep, and slaughter them here, and eat; and do not sin against the Lord by eating with the blood.’ ” So all of the troops brought their oxen with them that night, and slaughtered them there.35And Saul built an altar to the Lord; it was the first altar that he built to the Lord.