1 Kings 1:50-52

1:50 Adonijah feared Solomon, so he got up and went and grabbed hold of the horns of the altar. 1:51 Solomon was told, “Look, Adonijah fears you; see, he has taken hold of the horns of the altar, saying, ‘May King Solomon solemnly promise me today that he will not kill his servant with the sword.’” 1:52 Solomon said, “If he is a loyal subject, not a hair of his head will be harmed, but if he is found to be a traitor, he will die.”