Yes. No. Maybe.
Depends upon ones definition of what a 'Delusion' is.
If you're using a purely clinical paradigm/perception of Delusion, such as via such mediums as the
DSM then
possibly:
Delusion:
False beliefs based on incorrect inference about external reality that persist despite the evidence to the contrary and these beliefs are not
ordinarily accepted by other members of the person's culture or subculture.
...important bit that italicised bit: "
and these beliefs are not ordinarily accepted by other members of the person's culture or
subculture."
In that regard, religious people
could slide out comfortably from the above - giving that Religion is predominately a collective construct, as
such 'Religious beliefs' certainly could/are held by
other members of the person's culture or subculture.
Additionally, the DSM contains a bit of a 'rider clause' in regards to incorporating religious belief into any delusional based diagnosis:
Personal beliefs should be evaluated with great respect to complexity of cultural and religious differences: some cultures have widely accepted
beliefs that may be considered delusional in other cultures.
...so...po-tay-to po-tar-to...clear as mud really...
As a Believer I certainly accept, and will openly admit, that my belief structure in regards to religious/faith-based elements of it may well not have
any logical, analytically/scientifically verifiable basis to them...I have a strong belief/faith in an supposedly unverifiable Entity (that which I
term God), I have a belief/faith in a great many things that are without unquantifiable irrefutable evidence...yet my faith/beleif is strong.
I could well be deemed delusional for that.
What I hold as *true* for me could well be a delusion. Totally.
I may not feel or think it is...but then hey, again from a Clinical Perspective my unwavering belief could also be deemed lack of awareness and
insight into a delusional structure.
Are religious people Delusional? Well...perhaps some are, some arent, some are fine, some are barking mad, and who can pick which is which?
Ultimately be it delusion or not...for me the issue is not so much in what someone holds as *true* but rather hinges on what someone does with that
*truth*.
Do we as believers berate others with our *truth* as we may see it? Do we ram it down other peoples throats and weld it like some blazing sword, as I
unfortunately see it done so often?
Do we demand everyone else take onboard our *truth*, succumb and buy in to it?
Do we use it to castegate and berate ourselves as well?
Basically, what is the resulting outcomes of any belief or faith in something we may hold - is it positive or is it negative for us and certainly for
others?
...just a few opinions from someone who *believes*, but also from someone whose day-job is Mental Health and assessing Mental Disorders...
Peace.