The matter in which there might be spiritual progress in time on a time-span extending over many successive generations of life on Earth is not the unregenerate nature of man, but the opportunity open to souls, by way of the learning that comes through suffering, for getting into closer communion with God, and becoming less unlike Him, during their passage through this world.

What Christ, with the Prophets before Him and the Saints after Him, has bequeathed to the Church, and what the Church, by virtue of having been fashioned into an incomparably effective institution, succeeds in accumulating, preserving, and communicating to successive generations of Christians, is a growing fund of illumination and of grace-meaning by ‘illumination’ the discovery of revelation or revealed discovery of the true nature of God and the true end of man here and hereafter, and by ‘grace,’ the will or inspiration or inspired will to aim at getting into Him. In this matter of increasing spiritual opportunity for souls in their passages through life on Earth, there is assuredly an inexhaustible possibility of progress in this world.

Is the spiritual opportunity given by Christianity, or by one or other of the higher religions that have been forerunners of Christianity and have partially anticipated Christianity’s gifts of illumination and grace to men on Earth, an indispensable condition for salvation –meaning by ‘salvation’ the spiritual effect on a soul of feeling after God and finding Him in its passage through life on Earth?

If this were so, then the innumerable generations of men who never had the chance of receiving the illumination and grace conveyed by Christianity and the other higher religions would have been born and have died without a chance of the salvation which is the true end of man and the true purpose of life on Earth. This might be conceivable, though still repugnant, if we believed that the true purpose of life on Earth was not the preparation of souls for another life, but the establishment of the best possible human society in this world, which in the Christian belief is not the true purpose, though it is an almost certain by-product of a pursuit of the true purpose.