Demons: What the Bible Really Says about the Powers of Darkness

What does the Bible actually say about demons and the powers of darkness—and how much of what readers assume comes from later tradition? In Demons: What the Bible Really Says about the Powers of Darkness, Michael S. Heiser takes up those questions by returning to biblical language and the ancient worlds in which the texts were written.

This study moves from Hebrew and Greek terms to accounts of supernatural rebellion and, finally, the Devil, evil spirits, and ruling powers in the New Testament. Its distinctive emphasis is context: familiar ideas are examined against the vocabulary, texts, and beliefs of the biblical eras.

Read the language before the labels

The opening section considers how the Old and New Testaments describe evil spiritual beings. By attending to Hebrew and Greek terminology, Heiser asks readers to look beyond the way a word may sound in a modern English translation and consider the distinctions and associations present in its original setting.

Trace the story across ancient contexts

The book then follows its subject through the Old Testament and Second Temple Judaism, with chapters on Satan, supernatural rebellion, depravity, and powers associated with the nations. This historical sweep places biblical passages alongside the wider ancient context that informs Heiser’s interpretation.

The Devil, spirits, and ruling powers

A later section turns to the New Testament, considering the Devil’s dominion and destiny, evil spirits and demons, and the status of ruling powers. Rather than treating every reference as interchangeable, the discussion asks how these figures relate within the biblical account.

Questions and assumptions, reconsidered

The final chapter addresses myths and common questions about the powers of darkness. Across the book, Heiser challenges readers to distinguish what the biblical texts say from ideas they may have inherited through later interpretation.

For readers of biblical studies and theology

Readers interested in biblical demonology, ancient Jewish thought, or Christian theology will find a focused study that brings language, historical context, and scriptural interpretation into conversation. The result is an invitation to revisit a familiar subject with closer attention to the texts and the worlds behind them.