1 Kings 1:2

1:2 His servants advised him, “A young virgin must be found for our master, the king, to take care of the king’s needs and serve as his nurse. She can also sleep with you and keep our master, the king, warm.”

1 Kings 8:25

8:25 Now, O Lord, God of Israel, keep the promise you made to your servant, my father David, when you said, ‘You will never fail to have a successor ruling before me on the throne of Israel, provided that your descendants watch their step and serve me as you have done.’