Devotional Background
Who wrote the book?
Together, 1 and 2 Samuel form one book in the Hebrew Bible. The Greek translation of the Bible, the Septuagint, was the first version to divide the material into two parts. Though named after its main character, the prophet Samuel, the book does not claim an author. However, Samuel may have written, and he certainly supplied, the information for 1 Samuel 1:1–24:22, which is a biography of his life and career up to his death. First Chronicles 29:29 notes that Samuel, along with Nathan and Gad, recorded the “acts of King David.” Evidence in the writing suggests that the books of 1 and 2 Samuel were compiled by someone from the prophetic school who used documents from Samuel, Nathan, and Gad.1
https://insight.org/resources/bible/the-historical-books/first-samuel