Abishag (Hebrew: אבישג‎ Avishag) was a beautiful young woman of Shunem chosen to be a helper and servant to King David in his old age. ... Solomon suspected in this request an aspiration to the throne, since Abishag was considered David's concubine, and so ordered Adonijah's assassination (1 Kings 2:17–25).

Why did they bring Abishag to King David?

Abishag is originally brought to David to lie in his bosom and keep him warm as he nears death. She is present for a conversation during which David's wife Bathsheba convinces David to name her son Solomon as his successor.

What did Adonijah do in the Bible?

David's favourite wife, Bathsheba, organized an intrigue in favour of her son Solomon. Shortly after his accession, Solomon had Adonijah put to death on the ground that, by seeking to marry David's concubine Abishag, he was aiming at the crown (I Kings 1 ff.).