Everyone who has any religion knows and acknowledges that those who lead a good life are saved and those who lead an evil life are damned. They know this because heaven is united with people who know from the Word that there is a God, that there is a heaven and a hell, and that there is a life after death. This [connection with heaven] gives rise to this widespread perception.
For this reason in the Athanasian statement of faith concerning the Trinity, which is accepted throughout the whole Christian world, what it says at the end is also accepted everywhere, namely,
Jesus Christ, who suffered for our salvation, ascended into heaven, and sits at the right hand of the Father Almighty. From there he will come to judge the living and the dead; and then those who have done good will go into everlasting life and those who have done evil will go into everlasting fire.
from Life/Faith, Section 3