[1][note 1] The Religionsgeschichtliche Schule used the methodologies of higher criticism,[web 1] a branch of criticism that investigates the origins of ancient texts in order to understand "the world behind the text.
[web 1] It argued that Christianity was not simply the continuation of the Old Testament, but syncretistic, and was rooted in and influenced by Hellenistic Judaism (Philo) and Hellenistic religions like the mystery cults and Gnosticism.
[web 2] The school initiated new areas of research into Biblical history and textual analysis.
The circle included Bernhard Duhm (1873), Albert Eichhorn (1856–1926; 1886), Hermann Gunkel (1888), Johannes Weiss (1888), Wilhelm Bousset (1890), Alfred Rahlfs (1891), Ernst Troeltsch (1891), William Wrede (1891), Heinrich Hackmann (1893), and later Rudolf Otto (1898), Hugo Gressmann (1902) and Wilhelm Heitmüller (1902).
Rudolf Bultmann (1884–1976) may be considered as a third-generation member of this school.