Meaning: To face a threat head on
1 Kings 1:50-51
And Adonijah feared because of Solomon, and arose, and went, and caught hold on the horns of the altar. [51] And it was told Solomon, saying, Behold, Adonijah feareth king Solomon: for, lo, he hath caught hold on the horns of the altar, saying, Let king Solomon swear unto me to day that he will not slay his servant with the sword.
1 Kings 2:28
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.