The works of a modern German scientist comprehensively studied the centuries-old activities of the Christian church, presented interesting, little-known facts about the formation and development of Christianity, about the fight against heresy, about the methods by which this religion was spread, and sometimes implanted in different countries. Throughout the publication, Karlheinz Deschper remains true to his thesis: "Who writes world history not as a criminal history is her accomplice." The first book traces the activities of the Christian church from its founding until 430. The second book describes the activities of the Christian church in the period of late antiquity: from 400 to 565