When Saul died, David, who had been anointed by God through Samuel to be the next king, had the rights to the throne--ahead of any remaining family that Saul had. But according to the pattern of the day, the throne technically could have gone to Jonathan’s firstborn, who was named Mephibosheth. As David took the throne, Mephibosheth’s nurse thought that his life was in danger and fled with him, injuring his feet in the process. There he lived, crippled and afraid for his life, until today’s passage, when he heard a knock at the door and learned that it was King David--the one who he assumed was most likely there to kill him.