"Faith should never be probabilistically specified. A dice-roll is still a dice-roll..."

Kinda funny because I go to a weekly Tarot group put on by two protestant ministers. Some religions vary [1] [2], but in the large space of human spiritual and magical traditions it is entirely ordinary to divine using sources of randomness.

[1] I'm sure some Christians would disapprove: not least Deuteronomy 18:10

[2] ... my foxes will josh me that I'm not supposed to be looking to other gods for answers

Sure, but Barnes only meant the Catholic faith. There are faiths of all kinds.