René Salm has concluded his series of Hermann Detering Commentaries:
It argues that Christianity emerged from a gnostic substratum,
and that the figure Jesus of Nazareth and the New Testament gospels
are second century CE developments.
René Salm quotes Hermann Detering’s overall conclusion:
Beginning with the gnostic interpretation of the Exodus motif and the question of its origin, we have arrived at an element of critical importance: the metaphor of transcendence, expressed figuratively as [reaching] the “other shore”—which plays a central role in Indian/Buddhist spirituality. The question of where the two trajectories intersect—Jewish tradition/Hebrew Bible on the one hand, and Buddhist/Indian spirituality on the other—led us to the Therapeutae, about whom Philo of Alexandria reports in his De Vita Contemplativa.
Once the Buddhist origin of the Therapeutae is seen as plausible, it can be shown that their central mystery consisted of an interpretation of the Exodus, an interpretation based upon Buddhist sources. This interpretation, in turn, was the seed of the Christian sacrament of baptism. Early Christian gnostics, such as the Peratae and the Naassenes, transferred to Moses’ successor Joshua what the Therapeutae (more strongly rooted in Jewish tradition) maintained for Moses. The old cult of Moses would be surpassed by the new, Gnostic-Christian cult of Joshua. The counterpart of Moses became Jesus/Joshua.
Seen in this light, the “historical” Jesus, that is, Jesus of Nazareth, was hypostatized in the second century of our era out of the Old Testament Joshua. The Christian savior Joshua/Jesus is nothing other than the result of Jewish-Buddhist exegesis of the Old Testament.
I have read in translation much of Hermann Detering’s article. I look forward to being able to devote the time and energy that a proper assessment of his argument requires.