I've been reading about the 30,000+ Christian Churches etc for a while now.
So let's see how many that we actually know about.
Trappists (silent order).
That's why no one ever heard of them. They proselytize in braille, but a blind person must first go to their church to find the sign that tells people where to go. They are afraid to mention the name of their God (some spell that G_d) because he is so powerful. They provide seeing eye dogs to their blind followers, but none can find them. They believe in hiring the handicapped, so their seeing eye dogs are also blind (which cuts down the number of followers at every street corner).
Unlike most religions, God answers their prayers, but, since God is also Trappist, they don't hear him (which, of course, is proof of God's existence).
They entice new members to join by offering trips to amusement parks (you'll see crowds of monks passing through the park). However, they must get new stress companion dogs every time they ride the 200 foot drop rides (dog highly stressed).
They no longer have field trips to the zoo, since one of their blind members mistook a bear for his companion dog.
Lacking advertising, they lack funding, so they sent a monk out into the job market. He had no particular skills, except making religious icons. So, they found him the perfect job, nailing tiny Jesus figures to crosses so they could sell them to tourists. With trembling lip, he cringed with each hammer swing (occasionally crushing Jesus). He spent the whole night counting rosary beads to atone. (I don't see why....the next morning the statue was whole again).
To encourage their ban on talking, they printed their bibles without ink. So, they are not only the most silent order, they are also the least informed.
If they enforce their religion in public schools, they'd have to silence all the kids (that, of course, is impossible).
Jesus's last words were "ouch." Since that isn't particularly salient, they figured that no one should talk at all, for fear that their last words would not be filled with wisdom.