Signed holy bible. +100 faith

English, if you don't agree you will be burned alive for blasphemy and questioning the almighty god.

Aramaic?

Though these days they tend to speak Spanish

Jive

In the case you're serious he likely would have known every language but would have spoken Aramaic or Hebrew.

Each signature from a pope gives a permament +10 faith buff. The item becomes more powerful as the time passes.

Update v1.01

Fixes: Popes can no longer write as many signatures as they want. Now you're limited to only one signature per pope.

produces note "this is totes really from Jesus --da pope"... in identical handwriting

I didn't see it, so it's new to me!