'Horns' in the Bible

Adonijah feared because of Solomon; and he arose, and went, and caught hold on the horns of the altar.

It was told Solomon, saying, "Behold, Adonijah fears king Solomon; for, behold, he has laid hold on the horns of the altar, saying, 'Let king Solomon swear to me first that he will not kill his servant with the sword.'"

The news came to Joab; for Joab had turned after Adonijah, though he didn't turn after Absalom. Joab fled to the Tent of Yahweh, and caught hold on the horns of the altar.

Zedekiah the son of Chenaanah made him horns of iron, and said, "Thus says Yahweh, 'With these you shall push the Syrians, until they are consumed.'"