I assume that there is no such thing as a progressive Christianity, except in so far as mankind grow in the realization of its lofty principles; that there has not been and will not be any improvement on the ethics and spiritual truths revealed by Jesus the Christ, but that they will remain forever the standard of faith and practice. I assume also that Christianity has elements which are not to be found in any other religion,--such as original teachings, divine revelations, and sublime truths. I know it is the fashion with many thinkers to maintain that improvements on the Christian system are both possible and probable, and that there is scarcely a truth which Christ and his apostles declared which cannot be found in some other ancient religion, when divested of the errors there incorporated with it. This notion I repudiate. I believe that systems of religion are perfect or imperfect, true or false, just so far as they agree or disagree with Christianity; and that to the end of time all systems are to be measured by the Christian standard, and not Christianity by any other system. The oldest religion of which we have clear and authentic account is probably the pure monotheism held by the Jews. Some nations have claimed a higher antiquity for their religion--like the Egyptians and Chinese--than that which the sacred writings of the Hebrews show to have been communicated to Abraham, and to earlier men of God treated of in those Scriptures; but their claims are not entitled to our full credence. We are in doubt about them. The origin of religions is enshrouded in mystical darkness, and is a mere speculation. Authentic history does not go back far enough to settle this point. The primitive religion of mankind I believe to have been revealed to inspired men, who, like Shem, walked with God. Adam, in paradise, knew who God was, for he heard His voice; and so did Enoch and Noah, and, more clearly than all, Abraham. They believed in a personal God, maker of heaven and earth, infinite in power, supreme in goodness, without beginning and without end, who exercises a providential oversight of the world which he made. It is certainly not unreasonable to claim the greatest purity and loftiness in the monotheistic faith of the Hebrew patriarchs, as handed down to his children by Abraham, over that of all other founders of ancient religious systems, not only since that faith was, as we believe, supernaturally communicated, but since the fruit of that stock, especially in its Christian development, is superior to all others. This sublime monotheism was ever maintained by the Hebrew race, in all their wanderings, misfortunes, and triumphs, except on occasions when they partially adopted the gods of those nations with whom they came in contact, and by whom they were corrupted or enslaved.