Charles Ellicott Commentary 1 Samuel 14:33

"Then they told Saul, saying, Behold, the people sin against Jehovah, in that they eat with the blood. And he said, ye have dealt treacherously: roll a great stone unto me this day." — 1 Samuel 14:33 (ASV)

Roll a great stone to me this day. —The object of this was that the people should kill their beasts on the stone, and the blood could run off on the ground. It was a rough expedient, but it showed the wild soldiers that their king and general was determined that the Law of Moses should be kept and honored, even under circumstances of the most dire necessity. This scrupulous care for the “Law of the Lord” at such a time as the evening of the battle of Michmash shows us what a strange, complex character Saul was: now superstitiously watchful lest the letter of the Law should be broken; now recklessly careless whether or not the most solemn commands of God were executed.