1 Kings 1:5-8

Then Adonijah the son of [David’s wife] Haggith exalted himself, saying, “I [the eldest living son] will be king.” So [following Absalom’s example] he prepared for himself chariots and horsemen, and fifty men to run before him. [2 Sam 15:1] His father [David] had never rebuked him at any time by asking, “Why have you done this?” Adonijah was also a very handsome man, and he was born after Absalom. He had conferred with Joab the son of Zeruiah [David’s half sister] and with Abiathar the priest; and they followed Adonijah and helped him. But Zadok the priest, Benaiah the son of Jehoiada, Nathan the prophet, Shimei, Rei, and David’s most formidable warriors did not side with Adonijah [in his desire to become king].