He conspired with Joab son of Zeruiah and with Abiathar the priest. They supported Adonijah,

“Show loyalty to the sons of Barzillai the Gileadite and let them be among those who eat at your table because they supported me when I fled from your brother Absalom.

The news reached Joab. Since he had supported Adonijah but not Absalom, Joab fled to the Lord’s tabernacle and took hold of the horns of the altar.