“Adonijah son of Haggith exalted himself. ‘I will be king.’ He prepared for himself chariots and horsemen, with fifty men to run before him. His father had never at any time displeased him by asking. ‘Why have you done thus and so?’ He was also a very handsome man. He was born next after Absalom. He conferred with Joab son of Zeruiah and with Abiathar the priest. They supported Adonijah. But Zadok the priest, Benaiah son of Jehoiada, Nathan the prophet, Shimei, Rei, and David’s own warriors did not side with Adonijah.”
Adonijah was David’s oldest living son so that it does not seem unusual that he should think about being king. He actually was the 4th son born at Hebron, but the others had died. Remember Prince Charles in England waiting all his life to be king while his mother Queen Elizabeth rules for over 60 years. Adonijah was good looking and had never displeased his father. He had the support of the army leader Joab and the priest Abiathar, 2 old friends of David. However, he did not have the support of the priest Zadok, the prophet Nathan, the king’s body guard Benaiah, or many of David’s warriors.