According to the doctrine of the Church of Jesus Christ of Latter-day Saints (LDS Church), the largest denomination in the Latter Day Saint movement, the plan of salvation (also known as the plan of happiness and the plan of redemption) is a plan God created to save, redeem, and exalt humankind, through the atonement of Jesus Christ. The elements of this plan are drawn from various sources, including the Bible, Book of Mormon, Doctrine & Covenants, Pearl of Great Price, and numerous statements made by the leadership of the Church of Jesus Christ of Latter-day Saints (LDS Church). The first appearance of the graphical representation of the plan of salvation was provided in the 1952 missionary manual entitled A Systematic Program for Teaching the Gospel. Summary Pre-mortal existence In the 1840s, Joseph Smith stated that the human spirit existed with God before the creation of Earth. Thus, Latter-day Saints believe in a pre-mortal existence, in which people are literally the spirit children of God, though Smith is explicitly quoted in the King Follett Sermon as saying that "God never had the power to create the spirit of man." Latter-day Saints often point to Jeremiah 1:5 as one example of evidence in the Bible for a pre-earth existence. This teaching is primarily based, however, upon revealed doctrine by Smith and his successors to the presidency of the church. Prior to the existence of spirits, some element of the human spirit, called intelligence, existed eternally in the same sense that God existed eternally, but in a less progressed form of energy or matter. This may explain the church's teaching that man and God are co-eternal (carefully distinguishing "co-eternal" from "equal", which is not a part of Mormon doctrine). Within Latter-day beliefs, Jesus Christ is looked upon as the creator of the Earth under God the Father's direction, while God the Father is the creator of all men, women, and creatures of the Earth. During this pre-mortal existence, God the Father presented the following plan to His children: Human beings would be born on Earth. There they would receive a physical body necessary to exaltation and a fullness of joy. On earth, they would be tested through trials of their faith, and be subject to mortality. A "veil" would be set in place to obscure humankind's memory of its divine origins, thus allowing for "walking by faith" and for greater freedom of choice