1 Kings 1:6

So he said, “You know that the kingdom was mine and that all Israel expected me to be king; however, the kingdom has turned about and become my brother’s, for it was his from Yahweh.

Then King Solomon answered and said to his mother, “And why are you asking Abishag the Shunammite for Adonijah? Ask for him also the kingdom—for he is my older brother—even for him, for Abiathar the priest, and for Joab the son of Zeruiah!”

Now David became old and full of days, and he made his son Solomon king over Israel.