See everybody gets to go to Heaven.
Atheists can be good, as can Hindus, Bhuddists, Jews, and Muslims. I daresay we all know people who are not Christians who are more ethical and morally upright than some Christians.
We are saved by faith, not by works, lest any man should boast. The only thing that separates a believer from a nonbeliever is just that, belief. It is a fallacy for Christians to think that people without Christ are necessarily immoral or amoral.