I want to know the answer to the following question:
What language does the Russian Orthodox Church use?
All the background I'm provided with is that "The vocabulary (mainly abstract and literary words), principles of word formations, and, to some extent, inflections and literary style of Russian have been also influenced by Church Slavonic, a developed and partly russified form of the South Slavic Old Church Slavonic language used by the Russian Orthodox Church.". Is that enough to answer the question?
Answer: yes