Once again, the rooster crowed is, to this day, Karlheinz Deschner's most important book for many. Countless people found reassurance in his meticulous work regarding their doubts about Christianity. Deschner demonstrates that even the foundations of the Christian faith are questionable, and the subsequent "Criminal History of Christianity" almost logically follows from this. The subject of this work, first published in 1962, primarily focuses on the Early Church. It examines the early conflicts, the emergence of the hierarchical apparatus, the treatment of dissenters within its own ranks, and the interaction with competing religions of salvation. The continuities of the popes' politics—"representatives" of Christ, after all—extend all the way into the 20th century.