The books of Samuel were originally one book. In the Septuagint it was divided into two, owing to its length, and the Christian tradition followed this division. In Hebrew Bibles used by the Jewish community, this division was not made before the 15th century, under the influence of the Vulgate. The book of Samuel consists chiefly of narratives, which are supplemented with a few songs, lists, and brief notices. Its central concern is with the personal life of the leaders. Their aspirations, feelings, and passions are depicted realistically, displaying negative qualities as well as positive ones.