What are the after-effects of insulting gods or goddesses?
A punishment which one has to face in the afterlife is given in Devi Bhagavata Purana 9.33.
The wretch that abuses Mûla Prakriti, the Vedas, the S’âstras, Purânas, Brahmâ, Visnu, S’iva and the other Devas, Gaurî, Laksmî, Sarasvatî and the other Devîs, goes to the hell named Bhayânaka Narakakunda. There is no other hell more tormenting than this. The sinners live here for many Kalpas and ultimately become serpents. There is no sin greater than the abuse of the Devî. There is no expiation for it. So one ought never to abuse the Devî. If one discontinues the allowances given by oneself or other persons to the Devas or Brâhmanas, one goes to Visthâ Kunda and has to eat the faeces there for sixty thousand years and finally to be born in Bhârata as worms in faeces the same number of years.
This includes punishments for abusing both deities and the scriptures.
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