What is the cloth that priests are the men of?

In case that wasn’t clear, “man of the cloth” is the phrase I’m talking about. The shroud of Turin is all I can come up with, but that just sounds wrong.

The cassocks they wear, maybe?

I don’t really know.

Wild guess, but I think it’s “man of the cloth” as opposed to “man of iron”, ie, a preacher rather than a warrior. The phrase “the cloth” would refer to a priest’s vestments.

According to this thread from the Phrase Finder Discussion Forum:

Interesting site. I see browsing in my future…