While the book of Jonah is, in some ways, unique, it stands firmly in the Old Testament tradition. There have been various suggestions as to genre, the most likely being the (short) didactic story; but the aim of the author is not easy to discern. The authenticity of Jonah's message to the Ninevites is stressed, as is their repentance, and Yahweh's mercy. The purpose of the book must lie in a combination of these themes. Lamentations is a neglected book, perhaps because it was associated with the book of Jeremiah and considered almost as an appendix. On the question of genre it has the closest