Cross reference
1 Kings 2:21
21 And she said, Let Abishag the Shunammite be given to Adonijah thy brother to wife.
2 Samuel 16:21-22
21 And Ahithophel said unto Absalom, Go in unto thy father's concubines, that he hath left to keep the house; and all Israel will hear that thou art abhorred of thy father: then will the hands of all that are with thee be strong.
22 So they spread Absalom a tent upon the top of the house; and Absalom went in unto his father's concubines in the sight of all Israel.
1 Kings 1:3
3 So they sought for a fair damsel throughout all the borders of Israel, and found Abishag the Shunammite, and brought her to the king.