Sorry, I'm not sure I fully understand your question.
People used religion to try to explain the world and hold it together when they didn't have any better tools.
Now that we do, religion has stuck around because of cultural and social investment and the stubborn refusal of its priests and imams to give up the game, even though it's already over. Believers, when challenged on the truth of their religion will often retreat to its usefulness. This admits more than they might have intended, about what power religion can bring to bear.
So I don't know what you mean by "ocd that obsesses in the epistemological." I've seen people accuse atheists and skeptics of being too "narrow minded," claiming they obsess about evidence and fact, then typically brag about how "open minded" they are, usually involving some flowery word salad about energy and the universe and things they claim to know about an unknowable god, while guiltlessly rejecting other beliefs.
Unless you mean "that obsesses in the existential." Epistemology concerns how we decide what is true.
I've heard of existential OCD, but never run into anyone who obviously had it.
Existential OCD involves intrusive, repetitive thinking about questions which cannot possibly be answered, and which may be philosophical or frightening in nature, or both. The questions usually revolve around the meaning, purpose, or reality of life, or the existence of the universe or even one’s own existence. These same questions might come up in a university philosophy or physics class. However, most people can leave such classes or read about these topics and move on to other thoughts afterwards. Similar to other forms of OCD, individuals with Existential OCD can’t just drop these questions.
As the blurb mentions, consideration of life, reality and existence are worthwhile questions to ask, just as washing your hands is a worthwhile habit. The problem is when it prevents you getting on with your life, and you're spending an hour washing your hands before you leave the house, or spending so much time obsessing about the purpose of life that you don't live it, thereby creating that very problem.
Related, there is a phenomenon called scrupulosity.
Scrupulosity is a subtype of obsessive compulsive disorder (OCD) involving religious or moral obsessions. Scrupulous individuals are overly concerned that something they thought or did might be a sin or other violation of religious or moral doctrine. They may worry about what their thoughts or behavior mean about who they are as a person.
Someone once described Robin DiAngelo as suffering scrupulosity, not so much in a traditional religious sense, but about her own monumental racism. She's clearly an extremely racist woman, but is also supremely obsessed with her own inadequacies and guilt about her racism, which she then projects onto everyone else in her... ahem... "scholarship."
When I say that "religion is a mental illness" or "faith is a cognitive sickness," what I mean is that if you substitute pretty much anything in place of the well-known religious beliefs, tenets and characters, it sounds delusional, even to the believer of the traditional belief.
Believing that a god watches over you and judges whether you're doing good or evil - which is absurd, since the majority of people's actions are neutral, even if they have future good or bad consequences - is no more reasonable than believing that Santa sees you when you're sleeping, knows when you're awake, knows if you've been bad or good, so be good for goodness sake.
Here's what the DSM-5 says:
“Delusions are fixed beliefs that are not amenable to change in light of conflicting evidence. Their content may include a variety of themes (e.g., persecutory, referential, somatic, religious, grandiose). Persecutory delusions (i.e., belief that one is going to be harmed, harassed, and so forth by an individual, organization, or other group) are most common. Referential delusions (i.e., belief that certain gestures, comments, environmental cues, and so forth are directed at oneself) are also common. Grandiose delusions (i.e., when an individual believes that he or she has exceptional abilities, wealth, or fame) and erotomanic delusions (i.e., when an individual believes falsely that another person is in love with him or her) are also seen. Nihilistic delusions involve the conviction that a major catastrophe will occur, and somatic delusions focus on preoccupations regarding health and organ function.
Delusions are deemed bizarre if they are clearly implausible and not understandable to same-culture peers and do not derive from ordinary life experiences. An example of a bizarre delusion is the belief that an outside force has removed his or her internal organs and replaced them with someone else’s organs without leaving any wounds or scars. An example of a nonbizarre delusion is the belief that one is under surveillance by the police, despite a lack of convincing evidence. Delusions that express a loss of control over mind or body are generally considered to be bizarre; these include the belief that one’s thoughts have been “removed” by some outside force (thought withdrawal), that alien thoughts have been put into one’s mind (thought insertion), or that one’s body or actions are being acted on or manipulated by some outside force (delusions of control). The distinction between a delusion and a strongly held idea is sometimes difficult to make and depends in part on the degree of conviction with which the belief is held despite clear or reasonable contradictory evidence regarding its veracity.”
-- American Psychiatric Association, "Diagnostic and Statistical Manual of Mental Disorders"
Faith is literally belief without evidence and in spite of evidence to the contrary
“Where there is evidence , no one speaks of "faith." We do not speak of faith that two and two are four or that the earth is round . We only speak of faith when we wish to substitute emotion for evidence .”
-- Bertrand Russell
Question: What, if anything, would ever change your mind?
Ken Ham: No, no one is ever going to convince me that the word of god is not true.
Believers hold that Satan (Xianity) or shaitans (Islam) are out to get them ("not today, Satan!", persecution), see "signs" from their deity (referential), believe they have a "personal relationship" with and a direct telepathic line to a being who created the entire universe (grandiose), believe this creature loves them (erotomanic), and are looking forward to the complete decimation of the world on Judgment Day (nihilistic).
They believe their god "works through" people - such as when atheists point out you should thank your surgeon for your recovery, not a god - that people were brought into or taken out of their life by that deity "for a reason" and that the deity has a "plan" (delusions of control), that they were "inspired" by their deity (thought insertion), that their deity took away their sin, their lust, their pride (thought withdrawal), and so forth.
Religious faith matches literally every single one of the above categories and criteria.
And yet, later in the glossary:
“delusion A false belief based on incorrect inference about external reality that is firmly held despite what almost everyone else believes and despite what constitutes incontrovertible and obvious proof or evidence to the contrary. The belief is not ordinarily accepted by other members of the person’s culture or subculture (i.e., it is not an article of religious faith).”
-- American Psychiatric Association, "Diagnostic and Statistical Manual of Mental Disorders" ("Glossary of Technical Terms")
The same believers who hold their own beliefs with faith reject other beliefs that other people hold through faith, and regard as crazy. Even Xians will recognize the beliefs of the Heaven's Gate people as delusional, despite them being ordinarily accepted among that particular subculture. "Religious faith" and prevalence cannot justify exemptions from recognition of delusion.
"We only make fun of Scientology because it's new. It's no more bat shit crazy than Catholicism."
-- Sarah Silverman
People who think it's absurd to believe in Xenu...
the extraterrestrial ruler of a "Galactic Confederacy" who brought billions of his people to Earth (then known as "Teegeeack") in DC-8-like spacecraft 75 million years ago, stacked them around volcanoes, and killed them with hydrogen bombs. Official Scientology scriptures hold that the thetans (immortal spirits) of these aliens adhere to humans, causing spiritual harm.
I don't know if that actually helps answer your question, though.
Also can you do more citations in your oc
I usually link fairly aggressively. I mean, I can do more if you like...