Old Testament

Short definition from Wiktionary

Proper noun

1. 1
   The first major part of the Christian Bible, covering events before the coming of Christ, corresponding roughly to the Jewish Tanakh. Usually subdivided into the categories of law, history, poetry (or wisdom books), and prophecy.

Adjective

1. 1
   Reminiscent of the content of the Old Testament, or of the behavior of God in it; especially dramatic, violent or vengeful.