3 So they searched throughout the land of Israel for a beautiful girl, and they found Abishag from Shunem and brought her to the king.

Matthew Henry's Commentary on 1 Kings 1:3

Commentary on 1 Kings 1:1-4

(Read 1 Kings 1:1-4)

We have David sinking under infirmities. He was chastised for his recent sins, and felt the effects of his former toils and hardships.