The Exile --Continued.
We have one psalm which the title connects with the beginning of David's stay at Adullam,--the thirty-fourth. The supposition that it dates from that period throws great force into many parts of it, and gives a unity to what is else apparently fragmentary and disconnected. Unlike those already considered, which were pure soliloquies, this is full of exhortation and counsel, as would naturally be the case if it were written when friends and followers began to gather to his standard. It reads like …
Alexander Maclaren—The Life of David

Samuel
Alike from the literary and the historical point of view, the book[1] of Samuel stands midway between the book of Judges and the book of Kings. As we have already seen, the Deuteronomic book of Judges in all probability ran into Samuel and ended in ch. xii.; while the story of David, begun in Samuel, embraces the first two chapters of the first book of Kings. The book of Samuel is not very happily named, as much of it is devoted to Saul and the greater part to David; yet it is not altogether inappropriate, …
John Edgar McFadyen—Introduction to the Old Testament