Religion contains a non-religious element that destroys religious forms [causal]
Perhaps, similarly, there is also some element in religion which is not religious; when this element comes to the surface, all concretized religious forms, in which there is true religion, may be destroyed. This is the inner dynamic of heresy and apostasy.
XREF: Connects to the author's broader framework paralleling religion with other systems (science, philosophy) that may contain non-systemic elements capable of destabilizing them.
Georg Simmel, on individuality and social…, loc. 852