1 Kings 2:16 (KJV)

And the days that David reigned over Israel were forty years: seven years reigned he in Hebron, and thirty and three years reigned he in Jerusalem.

Then sat Solomon upon the throne of David his father; and his kingdom was established greatly.

And Adonijah the son of Haggith came to Bathsheba the mother of Solomon. And she said, Comest thou peaceably? And he said, Peaceably.

He said moreover, I have somewhat to say unto thee. And she said, Say on.

And he said, Thou knowest that the kingdom was mine, and that all Israel set their faces on me, that I should reign: howbeit the kingdom is turned about, and is become my brother's: for it was his from the LORD.

And he said, Speak, I pray thee, unto Solomon the king, (for he will not say thee nay,) that he give me Abishag the Shunammite to wife.

And Bathsheba said, Well; I will speak for thee unto the king.

Bathsheba therefore went unto king Solomon, to speak unto him for Adonijah. And the king rose up to meet her, and bowed himself unto her, and sat down on his throne, and caused a seat to be set for the king's mother; and she sat on his right hand.

Then she said, I desire one small petition of thee; I pray thee, say me not nay. And the king said unto her, Ask on, my mother: for I will not say thee nay.

And she said, Let Abishag the Shunammite be given to Adonijah thy brother to wife.