1 Kings 1:1 & 2

"When King David was old and well advanced in years, he could not keep warm even when they put covers over him. So his servants said to him, 'Let us look for a young virgin to attend the king and take care of him. She can lie beside him so that our lord the king may keep warm.'" NIV translation

The books 1 Samuel & 2 Samuel give us the details of the rise of David to be the king of Israel and recount his days in office. Here, we see that David is getting up in years and cannot even stay warm. His servants decided to get him a young servant girl to provide body heat to keep him warm. We might ask ourselves the question of: Why didn't the queen do it? and we have to understand that she was probably running the affairs of the kingdom as the king had become old and senile. 

1 Kings 1:3 & 4

"Then they searched throughout Israel for a beautiful girl and found Abishag, a Shunammite, and brought her to the king. The girl was very beautiful; she took care of the king and waited on him, but the king had no intimate relations with her." NIV translation

A beautiful young virgin girl was found in the city of Shunem which was located in the land given to the tribe of Issachar. The girl became the king's servant but they did not have a physical intimacy.

1 Kings 1:5 & 6

"Now Adonijah, whose mother was Haggith, put himself forward and said, 'I will be king.' So he got chariots and horses ready, with fifty men to run ahead of him. (His father had never interfered with him by asking, 'Why do you behave as you do?' He was also very handsome and was born next after Absalom.)" NIV translation

In this passage, we see what happens when a father does not discipline his children. We see that David had never corrected Adonijah and so Adonijah was proud and conceited. He decided that he had the right to be king since he was the oldest and so he went about exalting himself. The same type of thing is happening more and more today as children are not being disciplined and so grow up thinking that they are entitled to whatever their heart desires. Like it was with King David, this is a failure on the part of the parents.