Jesus clearly described the consequences of practicing sin -fiery Gehenna. But if you don't believe in the Bible, you don't have to worry about that for now.
JW have their good reasons for getting angry with WT for a lot of different reasons; some leave and some stay but that is not a justification for getting involved in sinful conduct such as adultery or stealing or other conduct that harms others or yourself which is a downward spiral that will suck you in to disaster. "The fool has said in his heart, there is no Jehovah."