Religion Quotes in City of Bones

We assume Clary is going to say "angels don't exist" before getting cut off by Madame Dorothea. Jace doesn't seem to think they do, even though he might be one (or maybe he just looks heavenly).

Yeah, these gods and goddesses don't mess around. Smiting with lightning? Pssh. They get their hands dirty—with blood. And these are definitely gods who like to come down to earth and meddle in human affairs.

Useful is different than "critical," or "spiritually beneficial." Maybe the Shadowhunters aren't angels at all, but they think of religion as a convenient ally.