In his letter to the Romans, Paul wrote, "For the wages of sin is death, but the gift of God is eternal life in Christ Jesus our Lord" (Romans 6:23). This single sentence neatly summarizes the Christian doctrine of atonement,
Muslims believe that there are different levels in Paradise (Heaven). The more righteous a person, the more good he does, the higher his place in Paradise.
Most Hindus believe that humans are in a cycle of death and rebirth called samsara. When a person dies, their atman (soul) is reborn in a different body.