could you create a religion based on an alien symbiote? 
It should be situated in modern day and try not to arouse suspicion.
The alien symbiote needs a week to gestate another symbiote.
The alien symbiote can talk telepathicly to other symbiotes.
The first symbiote can control the subsequend symbiotes.
A host can enhance his or her body through the symbiote. 
The host has an aurathat makes other people suggestible. 