1 Kings 1:5-7

5Now Adonijah the son of Haggith exalted himself, saying, "I will be king." And he prepared for himself chariots and horsemen, and fifty men to run before him.

6His father had never at any time displeased him by asking, "Why have you done thus and so?" He was also a very handsome man, and he was born next after Absalom.

7He conferred with Joab the son of Zeruiah and with Abiathar the priest. And they followed Adonijah and helped him.