The serpent thereupon suspended himself from the wall surrounding Paradise, to carry on his conversation with me from without. And this happened at the very moment when my two guardian angels had betaken themselves to heaven to supplicate the Lord. I was quite alone therefore, and when Satan assumed the appearance of an angel, bent over the wall of Paradise, and intoned seraphic songs of praise, I was deceived, and thought him an angel. A conversation was held between us, Satan speaking through the mouth of the serpent:
Satan — The Garden of Eden
Legends of the Jews 2:102