Nothing is clearer than that the Bible teaches that a separation of true Christianity from the false, so-called Christianity will take place prior to Christ’s return to this earth. Some people believe this separation will take place over the day that will be observed as the Sabbath; and, so they go about devoting almost their entire effort to getting people to observe the right day, and necessarily paying little attention to getting people to experience the spiritual meaning of the Sabbath, since they have not had that experience themselves. In other words, they put the sign before the experience signified, just as the later Jews did with the sign of circumcision, and just the opposite from the way in which, it is clearly stated, God gave circumcision to Abraham. This inevitably puts the Sabbath into the Old Covenant, just as the Jews put circumcision there, and teaches the people to seek their righteousness through obedience, instead of seeking to be made righteous by the divine indwelling, so they can truly and spiritually obey.
Now, there is not a text in the Bible that shows that this separation between true and false Christianity is to take place over the question of the day observed; but every scripture that sets forth this separation shows clearly that the separation takes place over the experience, or failure to experience, this wonderful soul-emancipation from bondage, of which the true Sabbath stands as a sign. In other words, God, today, as He did in the time of Abraham, puts the experience ahead of the sign of the experience.
From the pamphlet:
A Glimpse of the Closing Work of God in the World in Relation to the Sabbath
Salvation is ever a personal, inner transformation of character which can only be wrought out in the individual personally, where he is by the omnipresent Christ of which the incarnate Christ was a manifestation and a revelation. - George Fifield, from the Sermon Steps Back to God (Burnt Offering)
"There is no saving truth connected with the character of God, or with the gospel of Christ, but what is best of all revealed and illustrated in the character and personality of Jesus Christ. Yielding the life into His keeping, allowing Him unhindered to live His life in us and to express His personality through us, this is the all of Christianity. "In Him is all the fulness of the God-head bodily." "In Him is hidden all the treasures of wisdom and knowledge." And all our spiritual growth is just "Growing in grace and in the knowledge of our Lord and Saviour, Jesus Christ." - From the Sermon Personality of Jesus