Coaches want to be able to tell athletes exactly what they want done, and they want to have the confidence in their players that the job will get done. Coaches want to know that they can tell an athlete to do something and then know that it will be done.
Athletes want coaches to be direct. They want to know what play to run. Athletes want to know what the coach wants, they don't want surprises. Knowing exactly what is expected of them is how an athlete is able to focus on what they have to do.
David gave Solomon this kind of direction in 1 Kings. David knew his time on earth was almost up. He knew that Solomon would need to focus in order to prepare for what was coming. David gave Solomon very direct expectations for his life.