In Christian theology, conditionalism or conditional immortality is a concept of special salvation in which the gift of immortality is attached to (conditional upon) belief in Jesus Christ. This doctrine is based in part upon another theological argument, that if the human soul is naturally mortal, immortality ("eternal life") is therefore granted by God as a gift. This viewpoint stands in contrast to the more popular doctrine of the "natural immortality" of the soul.
During the Reformation the German reformer Martin Luther was among notable advocates of conditional immortality which prompted the French reformer John Calvin to criticize him...
Martin Luther 500 years ahead of Russell.
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