The Unseen Realm by Michael S. Heiser
The subtitle reads Recovering the supernatural worldview of the Bible.
Dr. Michael Heiser shows us a Biblical worldview that we are unfamiliar with in the evangelical church. A worldview understood by 1st century Christians and Jews, a worldview that 21st century Christians need to understand in order to interpret the Bible in its historical context. This book will put you in the head of the 1st century Christian and their understanding of what the scriptures say.