1 Samuel 14:32-36

So the people loudly rushed upon the spoils, and took sheep, oxen, and calves, and slaughtered them on the ground; and the people ate them with the blood.

Then observers informed Saul, saying, “Look, the people are sinning against the Lord by eating meat with the blood.” And he said, “You have acted treacherously; roll a large rock to me today.”

Then Saul said, “Disperse yourselves among the people and say to them, ‘Each one of you bring me his ox or his sheep, and slaughter it here and eat; and do not sin against the Lord by eating it with the blood.’ ” So all the people brought them that night, each one his ox with him, and they slaughtered them there.

And Saul built an altar to the Lord; it was the first altar that he built to the Lord.

Then Saul said, “Let’s go down after the Philistines by night and take plunder among them until the morning light, and let’s not leave a man among them alive.” And they said, “Do whatever seems good to you.” So the priest said, “Let’s approach God here.”