Do you believe this is a result of the authoritative truth or the effect of what is perceived as confirmation of mutual dedication?
I definitely don't think it is confirmation of mutual dedication. He can accoumplish that by spending a lot of money on a diamond.
I think 'exposure' to truth is the simple key here. Churches sometimes misadvirtise they are the authority to that truth, but most of them in my experience act as mediators for truth delivery. Some mediators in truth are much better than others.
And some act as outright obfuscators...