Religion is not being restricted -
in essence patients are being protected from unwanted proselyting.
The policy would also apply to JW's, Mormons, Muslims, those folks in sleepwear :smilewinkgrin:,
ect from bothering Born again Christians.
By telling anyone they can't bring in a bible, whatever version it might be, they're placing a restriction on religion, because such restriction prevents the visitor from exercising their religious viewpoints, and prevents the patients from possibly receiving a visit that could change the status of their soul.
Unfortunately, a policy that recognizes any religion, must recognize all religions.
Again, apply the policy that the visiting individual announce their reason for the visit; if refused, they move on to the next room, no further discussion. If they act like a telemarketer and try two, three, more times to convince the individual to let them in, or receive pamphlets, etc.; or, as in the case of the time I was visited in England by a J.W., results in the "visitor" referring to them as only being there because they want to kill people; then call Security and remove them from the premises.