The Second Book of Kings is the history of the two divided kingdoms which once were the united nation of Israel and was written by numerous and nameless authors. It was written int he 6th Century B.C. during the divided kingdom. Its key truth is the fall of Israel and Judah, and the key verse is 17:22 "For the children of Israel walked in all the sins of Jeroboam which he did; they did not depart from them..."