In hypnosis one uses 'anchor words' in suggestions to the subject. Religions all have several anchor words, literally being used to bypass the critical, objective conscious mind to reach the subjective subconscious mind. The latter accepts everything entering it as true, while the former acts as gatekeeper to keep bullshit out. But when an anchor word or phrase is used, the guard looks away.
In Christianity, like with all other religions, rituals and repetitive actions play an important role in engaging the gullible subconscious. And its victims are taught from an early age not to ask questions, to just believe. Several of these rituals, words and phrases then become anchor words. For example, you have to sing a boring song every Sunday, so your gatekeeper gets bored and start looking at that girl with the short skirt. The road to your subconscious mind then lays wide open, with it then accepting the words of the song as true.
One word that is used as anchor is 'amen', and it works like a charm. Test it yourself by saying in any group on FB something like 'isn't God great? Amen', then check the results. Instead of people asking 'can you prove it' or 'why', they'll just type amen like zombies in the comments.
So I find the included meme both apt and disturbing.