Adonijah was the son of David’s wife Haggith. He went to Bathsheba. She was Solomon’s mother. She asked Adonijah, “Have you come in peace?” He answered, “Yes. I’ve come in peace.”
Nathan asked Solomon’s mother Bathsheba, “Haven’t you heard? Adonijah, the son of Haggith, has made himself king. And King David doesn’t know anything about it.