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So do just and righteous christians go to hell when they sin?
If a person has a adicted problem with sex ,alcohol ,drug and are born again christian would they go to hell because they have not ended their addictions?
Do they be called not really born again when they fall 70 time 70 even in the same sins?

Although Mheath gave you the long and correct answer the short answer is this: No they do not go to hell. ALL their sins were paid for at the cross they were declared not guilty and so no sin after they have become truly regenerated will condemn them and send them to hell.

Peter

If you believe what you like in the gospels, and reject what you don't like, it is not the gospel you believe, but yourself. Augustine of Hippo