The rectoanal inhibitory reflex.

Faith of the assimilation tubules

Bladder and colon. If you can't have faith in those, you're not gonna have a good time.

Spleen, probably.

Kitten, believe in the spleen of the cards!

Sometimes I had faith in my liver.
Sometimes I had faith in my stomach.
Sometimes I had faith in my vestibular organ.

And since we are in tenforward:

Faith of the gallbladder wouldn't have the same ring to it.

It's important to have a backbone; put faith in the core of your being. Especially for inter-species negotiations and the occasional order to transport unruly cargo.

spoiler

Personally, I prefer to have faith of the spine(r).

Avoid chipotle if you don't have faith of the butthole.

I'm praying for my liver.

Faith of the nephrons.

If you’ve lost faith of the brain, you’re beginning to suffer from Alzheimer’s.

No. You fucking luddite.