The Intertestamental Period: A Climate of ChangeWhat is The Intertestamental Period: A Climate of Change all about? Also known as the Silent Years of the Bible, the four hundred year period between the Old and New Testament was all but silent. The actions of Alexander the Great, Antiochus Epiphanes, Justin Maccabees, Herod the Great, Cleopatra, Marc Antony Julius Caesar, and many others set the stage for the New Testament events to take place and to be written down for future study and life