Then Solomon was told, “Adonijah is afraid of King Solomon and is clinging to the horns of the altar. He says, ‘Let King Solomon swear to me today that he will not put his servant to death with the sword.’ ”
When the news reached Joab, who had conspired with Adonijah though not with Absalom, he fled to the tent of the Lord and took hold of the horns of the altar.
Once a year Aaron shall make atonement on its horns. This annual atonement must be made with the blood of the atoning sin offering for the generations to come. It is most holy to the Lord.”