The belief in the Father, Son, and Holy Spirit – three in one and one in three – is a cornerstone of Christianity.

Though difficult to grasp and describe, the interpretation of the Trinity has had profound and often violent consequences throughout history, extending even to the present day. Leaning on insights from philosophy, other religions, economics, politics, and psychology, Trond Bakkevig unravels this concept, revealing a surprisingly dramatic past. He convincingly demonstrates how the struggle over this fundamental theological principle can be traced in everything from the war in Ukraine to the EU's eastern border.

This book draws long historical lines, showing how we are all part of a much larger story.