realsadjewishhours:

“A second fundamental question pertained to scripture Christians had to decide: “Is the Hebrew Bible part of our sacred text?” This question could not have arisen at the beginnings of the church, for the Hebrew Bible was then the only scripture Christians recognized. Not until a selection of Gospels and Epistles and other literary texts about the life and significance of Jesus coalesced into a new scripture did the problem of the relationship with the traditional, classical scripture engender controversy.

Here too, the outcome was by no means self-evident. A position that many found plausible and some compelling was formulated by Marcion, one of the most profoundly provocative Christian thinkers of antiquity. He held that the Old Testament has been totally replaced by the New, that the G-d of the Old Testament was not the Christian G-d but an evil being whose commandments were intended to enslave. Anyone who has experienced surprised encounters with robust sexuality, or primitive violence, or cynical political intrigue in the pages of Hebrew scripture will understand why Marcion’s purism has a powerful appeal. It took vigorous efforts by church leaders to repudiate it.

That the legacy of Marcion was as not totally suppressed can be seen in various Christian tendencies to subordinate or denigrate the Old Testament. It erupted in full force once again in the 1930s, when a group of German Christians under the Nazi regime denounced the Old Testament as a book of “Jewish lying and deceit.””

-Moments of Crisis in Jewish-Christian Relations by: Marc Saperstein