2 Samuel 11:1

And it came to pass when the time of the year for kings going out [to battle] had come round, that David sent Joab, and his servants with him, and all Israel; and they destroyed the children of Ammon, and besieged Rabbath: but David remained at Jerusalem.

And it came to pass, after the year was expired, at the time when kings go forth to battle, that David sent Joab, and his servants with him, and all Israel; and they destroyed the children of Ammon, and besieged Rabbah. But David tarried still at Jerusalem.

At the return of the year, at the time when kings go out, David sent Joab and his servants with him, and all Israel; and they destroyed the children of Ammon and besieged Rabbah. But David stayed at Jerusalem.