Summary of the Book of 2 Samuel
Originally the books of 1 and 2 Samuel were one book. The men who translated the Septuagint from Hebrew to Greek separated the book into two parts. They are two separate books to this day.
The book of 2 Samuel is one of the books of history in the Bible. Like the other books of history, it does not seem to have a targeted audience. It covers a time period of approximately 40 years. This was from the death of Saul until the end of the life of King David.
Tradition held that Samuel wrote the book. However, that is not likely. Samuel died in 1 Samuel 25:1. If Samuel wrote at least part of the books of Samuel, then whoever finished what is now 1 Samuel probably wrote 2 Samuel.
Possible authors are Gad or Nathan (1 Chronicles 29:29). The book could have been finished before the death of David. Even though David did not die until the next book, whoever wrote the first book would have probably included some information about David’s death if his death had happened when the book was written.