Ken Davey wrote:

The next time one of the 'representatives' of (insert the religious
organization de-jour) knocks on your door invite him to expound on his/her
ideas -

My Father-in-law had an interesting way of dealing with such
"visitors". He asked them:
How many wars have been sarted over religion?
How many wars have been fought over mathematics?

The "visitors" exhibited a tendency to be elsewhere. :-)

Ted