Obviously not human himself and used to an unlimited variety of aliens in the galaxy - not to mention the many beings here - Bane thought it a simple enough question to go to. Humans obviously weren't known to live so long indeed.

"A god, huh," he didn't sound fearful or impressed. Stating a fact. He holstered the blaster. "I'm Cad Bane. It's smart to be careful who you run into around here, late at night."

It was unclear if he meant about himself or Yato.