I often wonder what the line is that actually separates a religious belief that has no objective support and delusion that has no objective support.
The reason I wonder this is very often, when asked for evidence to support their beliefs, religious believers will say that testimony and personal belief are the "evidence" for their belief. That may be fine and good, but without something objective, you have nothing better than beliefs that are supported by nothing more than your perception.
Delusion is defined as belief held in contrary to observed reality. A great many religious beliefs contradict observed reality.
So where is the line? Whats the difference?