I was a member of the Church of Jesus Christ of Latterday Saints from 1972 to 1988. I left upon realizing simply that I did not believe what the LDS Church taught and that to remain in such a Church would be a travesty for them and for me. I believe I was drawn out by the prayers of family and friends (only 1 of then was Eastern Orthodox). It was my desire to find the true Church of Jesus Christ as evidenced by the teachings of the Church Fathers and the study of the Resurrection letters of St. Athanasius translated by the Father Jack Sparks of blessed memory that led me to the Orthodox Church. The patience and fellowship of a wonderfully welcoming Greek Orthodox Church in El Paso TX and the follow up with other Orthodox parishes after my chrismation as I moved around the country. When I have spoken to former Mormons who have been to the Temple I have been advised that the best way to get a Mormon out of the Mormon Church is to pray that the Holy Spirit lead them out. I have met several former Mormons who are now in the Orthodox Church and with most of them, like me, it was the power of prayer by friends who were praying for them that actually removed the blinders that bound them to the LDS Church and eventually led them to the Orthodox Church.
The teachings of the Mormon Church are very complicated, one thinks they are understanding what they say only to find that they are using a "Mormonism" (a word used by Christians but defined differently in the LDS Church than it is for Catholics, Protestants, or Orthodox Christians). Very Subtle doctrine and dogma is taught only in the LDS Temple to those who are being "Endowed" with the secret knowledge or wisdom of Mormonism (yes it is a gnostic or secret knowledge cult). As far as I know there are four levels (there may be more) of knowledge in the Church of Jesus Christ of Latter-day Saints (the Mormons)".
Level One -]The public Knowledge or Missionary Mormonism, this level is taught in the open and consists of lessons that use written scripts and missionaries who come to your home to proselytize the non- Mormon.
Level Two- The Newly Converted Mormon goes through special classes to further educate themselves about LDS teachings, biblical interpretations, indoctrination, Mormon culture and traditions, etc.
Level Three- The Endowed Mormon - this is for Mormons who are going on Mission or getting Married. Here a Mormon is taught what he must do at the time of death to get into the Celestial Kingdom, Special signs, tokens, and passwords are given. marital couples are "sealed" for all eternity. Terms and words are seen in connection with the Temple Ritual stories that lead to a change of how one sees what he has been previously taught at level 1 & 2. At this level the Mormon has been given secret or "sacred" information that he will not reveal except in the Temple and at the end of his life. Only endowed Mormons have the opportunity to become gods and enter into the Celestial Kingdom as gods and not as a servant.
Level Four- Calling and Election made sure/ I must admit all that I know of this level is hearsay (I did not have my "calling and election made sure" before I left the LDS Church). As I understand it, at that point one is given absolute knowledge of Christ and Who he is, similar to what Joseph Smith had in his visions. From that point on, the individual is responsible for his own sins, he has grown past the need for Christ to save him. If he dies pure and holy he will be a god. As a Temple President at the Swiss Temple once told me, "those who have been called do not speak of it and those who speak of it have not been called."
I offer everyday a prayer for those who are in the LDS Church that their blinders fall off and they are led by the Holy Spirit into the fold of the Holy Orthodox Church of Jesus Christ.