Far more reasonable is the Gospel in its requisitions, the sole condition of whose promises is, that men shall 'worship the Father in spirit and in truth.' We have said that the essence of Christian faith is the same through all varieties of manifestation. It has ever been so, and it shall ever be so, for these varieties of manifestation are ordained for the very purpose of preserving the essence. They are ordained, lest men, too much regarding things seen and temporal, should confound with them things unseen and eternal; should not only incorporate religion in material forms, but identify it with them. They are ordained that men may learn what Christianity really is, what the Lord God requires of them concerning it, what He promises them in it, what He purposes to effect by it; and furthermore, that men may mutually recognize the new bond of brotherhood which the Gospel discloses, by which all are made heirs of God and joint-heirs with Christ Jesus. This recognition must take place as soon as the nature and design of Christianity are understood, be it here or hereafter, in this world or in the next; and surely the sooner the better. That mode of belief which encourages the closest investigation into the principles of Christianity; which discovers the most clearly all spiritual relations; which affords the most distinct apprehension of the permanence and universality of the Gospel; which discerns how its promises are ratified, its threatenings confirmed, its truths corroborated by all other spiritual influences, by all the results of human experience, and all the developments of Providence,--must be the best adapted to the needs and capabilities of an ever-expanding and immortal spirit. That mode of belief which adapts itself to all times and circumstances, and which is independent of all influences but those which are unfailing, must be the truest and best: and such a faith actually exists in those views of Christianity under which it appears as simple and diffusive as natural religion.