Someone told Solomon, “Adonijah is afraid of you, King Solomon. He is holding on to the horns of the altar and saying, ‘Make King Solomon swear to me today that he will not have me killed.’ ”
The news reached Joab. (He had supported Adonijah, although he hadn’t supported Absalom.) So Joab fled to the Lord’s tent and clung to the horns of the altar.
Once a year Aaron must make peace with the Lord by putting blood on its horns. Once a year—for generations to come—blood from the offering must be placed on the altar to make peace with the Lord. It is most holy to the Lord.”