And it was told Solomon, saying, Behold, Adonijah fears king Solomon: for, lo, he has caught hold of the horns of the altar, saying, Let king Solomon swear unto me today that he will not slay his servant with the sword.
Then tidings came to Joab: for Joab had turned after Adonijah, though he turned not after Absalom. And Joab fled unto the tabernacle of the LORD, and caught hold on the horns of the altar.
And Aaron shall make an atonement upon its horns once in a year with the blood of the sin offering of atonements: once in the year shall he make atonement upon it throughout your generations: it is most holy unto the LORD.