The Virgin Mary in the guise of The Immaculate Conception has her foot on the head of the serpent which represents the devil. The serpent tempted Eve. Rambling here.


Of course, the caduceus shows the snake as healer.

And Medusa, the Gorgon had snake hair and her gaze turned a man to stone. I have a neighbor like that. I always found it interesting that the beautiful Pegasus sprang from the blood of the beheaded Medusa. What the hell was he doing in there?