PERGAMOS IS CONDEMNED THE WORST BY JESUS FOR HAVING A GOOD HEALING GOD HE DIDN'T APPROVE OF

The City of Pergamos gets lurid condemnation from Jesus in the Book of Revelation. 

Why does Jesus single out this pagan city, one of many, one of many full of pagan cults and Temples as the throne of Satan?

This city was marked by the worship of Asclepius the god of health and healing.  Such gods could be understood as good spirits or saints. He was more a saint than a god like the other gods who were rather limited in power in many ways but could do favours for you.  Anyway people went in droves there to that city for healing.  His symbol was the snake which Revelation 12:9 says is an emblem of the Devil.  In the book of Genesis, Eve is tempted by a snake.

The message is clear.  Paganism where bloodshed is revered in sacrificial rituals and where demonic gods are invoked is better than demons being portrayed as helpful and saving and healing.  The idea is that evil religion is less damaging and influential when it shows its true face.

It reminds you of Paul's doctrine that Satan is adept at seeming to be an angel of light.