I. The Crisis of the Historical and Theological Criteria.
Already Walter Bauer, well known as a lexicographer, but unfortunately little known as a historian of the Ancient Church, in his ingenious monograph Rechtgläubigkeit und Ketzerei im ältesten Christentum (1934), had demonstrated convincingly that such Christian groups which were later labelled “heretical,” actually dominated in the first two or three centuries, both geographically and theologically. Recent discoveries, especially those of Nag Hammadi in Upper Egypt, have made it definitely clear that Walter Bauer was essentially right and that a thorough and extensive re-evaluation of early Christian history is called for.