All in One.
In order to understand "Mormonism" aright, one must grasp the idea of a series of Gospel dispensations, interrelated and connected like the links of a mighty chain, extending through the whole course of time. The Dispensation of the Fulness of Times proposes to bring together and weld into one the broken links of the Gospel chain. This was the dominant thought in the mind of the Prophet Joseph Smith as his last day on earth drew near. He expressed it in these words:
"It is necessary, in the ushering in of the dispensation of the fulness of times, ... that a whole and complete and perfect union and welding together of dispensations, and keys, and powers, and glories should take place and be revealed from the days of Adam even to the present time; and not only this, but things which never have been revealed from the foundation of the world, but have been kept hid from the wise and prudent, shall be revealed unto babes and sucklings in this the dispensation of the fulness of times." (Doc. & Cov. 128:18.)
"Mormonism" is all-comprehensive. It claims the past and lays its hand upon the future. The past is necessary to explain the present and the future. What Is cannot be clearly understood without some knowledge of What Has Been and What Will Be. Accordingly, the Spirit of Truth, manifesting the things of God, "brings things past to remembrance", and "shows things to come."