SPOILER WARNING: Major spoilers from the latest episode of AMC's "Preacher" (and the Vertigo comic series it's adapted from) follow.

In the pages of "Preacher," the origin of Jesse Custer's all-powerful "voice" gets revealed almost immediately -- even if he's not aware of what it is and where it came from until later. The AMC series, however, has kept viewers in the dark for five episodes now.

But tonight, everything was explained, and as in the comics, it came from the mouths of Fiore and DeBlanc, the two Adephi angels sent to retrieve the source of Jesse's mysterious power. As they tell him in a diner at the beginning of the episode, "Sundowner," the preacher's possessed by Genesis, the offspring of a forbidden love affair between an angel and a demon.

Of course, widespread knowledge of such information would be "an embarrassment to both sides," as they stress to Jesse, and they want him to give Genesis back to them. Needless to say, he doesn't. After all, he's got an entire town to save. But is using a half-holy/half-evil entity the right way to do it? We're suspecting not. Read more about it and the rest of "Sundowner" in the episode's recap.

"Preacher" airs Sunday nights on AMC.