Let's focus on 2 Samuel 5:1-5, 9-10 for our devotional thought.
It is difficult for one person to provide leadership in war and in peace.
The people of Israel felt the need for strong leadership. They lacked unity and enemies wanted to destroy them. David had shown ability to lead men in battle. The people reasoned David should be able to lead the country like an army. Their belief proved correct. However, it is incorrect to assume the same kind of leadership called for in war will be effective in peace.
The United States has had to enlist military heroes such as president. George Washington. He was an effective general and politician. Ulysses S. Grant was not. His administration was noted for corruptions and bad choices. Dwight D. Eisenhower was mediocre as a politician.
General MacArthur while never elected to political office showed himself to be both a great General and a strong administrator of the country of Japan in the post war years.
Choose your leaders carefully understanding we all are human and very much flawed by our sin.