Apocalyptic in the Old Testament apart from the Book of Daniel.
And the so-called "Proto - Apocalyptic" sections in:
(Joel 3) (Isaiah 24-27). (Ezekiel 37-39).
Apocalyptic in the New Testament apart from the Revelation to John.
Mat 24-25; ; 1Cor 1, 15; 2 Thess; 2Pet; Jud
The encouragement of the faithful by the promise of reward in the world to come and the use of symbolic language indicate that apocalyptic literature was produced during a time of crisis when encouragement and secrecy were needed. It is this use of the religious literary genre to stand against active oppression that explains the inter-relation of these charateristics of Apocalyptic Literature.