Devil/Angel on the Shoulders

I was just discussing a gag from a cartoon that dealt with the devil and the angel on opposite shoulders, and it struck me that the premise is so engrained in our culture that we don’t even question where it came from. Does anyone know of the first instance where a character received advice from a devil and an angel?

Here’s an earlier thread on the subject with some good info:

HERE’S what the devils & angel do in their free time.

Love that girl in red! :smiley: :o