Only one book in the Hebrew Bible is generally classified as apocalyptic literature, and that is the book of Daniel. But that is not to say that Daniel is the only book that shows characteristics typical of apocalyptic literature. Certain motifs characteristic of apocalyptic eschatology can be found in the myths of ancient Mesopotamia. Motifs of cosmic warfare pervade mythic material, such as the battle between the high gods and the sea monsters. This divine warrior motif is also present in biblical apocalyptic literature.
The Dead Sea Scrolls are a collection of about 900 documents, including texts from the Hebrew Bible, discovered between 1947 and 1956 in eleven caves in and around the ruins of the ancient settlement of Khirbet Qumran on the northwest shore of the Dead Sea in the West Bank.
The Traditional Story
The period 200 BC to 200 CE was a time of history-making changes in Jewish culture and religious and political philosophy. It also harbors the beginnings of the development of Christian philosophy, culture and beliefs. For these reasons events of that period still exerts considerable influence on large segments of Western philosophy and culture today. That is what makes it such an interesting period to study.
Most of the scholars today —who are now in the majority—disagree.  They contend that it is much more likely that the Jewish community itself instigated the translation to serve their own liturgical and pedagogical needs. When scholars holding this position reinvestigate Ptolemy’s supposed interest in a Greek translation of Jewish Law, the evidence begins to evaporate.