"Okay, wait, let me get this straight. You're telling me that you went to the Underworld, the land of the dead in many different religions and mythologies, and you brought someone back to life. And earlier you said you're the son of Hades. Like, actual god of death, Lord of the Underworld Hades?"
He could believe talking to dead people. He really could. But he barely believed in there being anything supernatural in the world, never mind gods. This was all just so confusing, especially on top of being dropped in the middle of nowhere, probably not even on Earth anymore.