'Horns of the Altar' in the Bible

And Adonijah feared Solomon, and he got up and went [to the tabernacle on Mt. Zion] and took hold of the horns of the altar [seeking asylum].

Now Solomon was told, “Behold, Adonijah is afraid of King Solomon, and behold, he has grasped the horns of the altar [seeking God’s protection], saying, ‘King Solomon must swear to me today that he will not kill his servant with the sword.’”

Now the news reached Joab, for Joab had supported and followed Adonijah, although he had not followed Absalom. So Joab fled to the [sacred] tent of the Lord and took hold of the horns of the altar [to seek asylum].