1 Samuel 14:32-35

32they rushed to the plunder, took sheep, goats, cattle, and calves, slaughtered them on the ground, and ate meat with the blood still in it.

33Some reported to Saul, “Look, the troops are sinning against the Lord by eating meat with the blood still in it.” Saul said, “You have been unfaithful. Roll a large stone over here at once.”

34He then said, “Go among the troops and say to them, ‘Let each man bring me his ox or his sheep. Do the slaughtering here and then you can eat. Don’t sin against the Lord by eating meat with the blood in it.’” So every one of the troops brought his ox that night and slaughtered it there.

35Then Saul built an altar to the Lord; it was the first time he had built an altar to the Lord.