Harvard Scholar Admits Conditionalism Was Original Belief

I was reading George Huntston Williams The Radical Reformation and came across this staggering admission:

Psychopannychism, called in the English seventeenth-century Christian mortalism and in the Anglo-American nineteenth century, conditionalism, i.e. life after death conditional on the coming Resurrection, was the position of the New Testament and of several Apostolic and Ante-Nicene Fathers from Clement of Rome through Irenaeus of Lyons.  (Geroge Williams, The Radical Reformation, Third Edition (Kirksville, MO: Truman State University Press, 2000), p. 65.)

As Christianity made it was into the Gentile world and climbed the ranks of society to those upper rungs, which were steeped in Greek philosophy, the biblical hope shifted from the body at the coming of Christ to the soul at the moment of death.