1. God Exists
There is a God in the Heavens who loves all His children. He is the great Elohim, He who created this earth and all things thereon. He is the great Father of the human family, and decrees His doctrine through Prophets in every dispensation, including this the Dispensation of the Fulness of Times.
2. Jesus Christ is the Savior
Jesus Christ is God's Son, and the only name whereby anyone can receive salvation and exaltation in the Celestial Kingdom. His life is an example to all the world how one should conduct his life, what one must do to inherit eternal life, and how one should react in all situations. Ineed, He said in the Intercessory Prayer, "And this is life eternal, that they might know thee the only true God, and Jesus Christ, whom thou hast sent" (John 17:3). Although skeptics say that both He (Jesus Christ) and His Father (God) do not exists, yet it is so. They exist in spite of the gainsayers.
3. Joseph Smith is a Prophet of God
When the Angel Moroni came to the Prophet Joseph Smith, he told him that Joseph's name would be had for both good and evil. Truly this prophecy has come to pass. Joseph Smith has indeed "has done more, save Jesus only, for the salvation of men in this world, than any other man that ever lived in it" (D&C 135:3). President Joseph Smith brought forth the Book of Mormon by the gift and power of God, which contains the fulness of the Gospel of Jesus Christ, and with the Bible convinces one of Jesus Christ's reality clearer than anything else. Joseph Smith also was the instrument on whom the Keys of the Priesthood were conferred by John the Baptist, Peter, James and John, Moses, Elias, Elijah, and Gabriel. These Keys are only held by The Church of Jesus Christ of Latter-day Saints, and in no other religion.
4. The Book of Mormon is True
The Book of Mormon: Another Testament of Jesus Christ is as true as the noon-day sun. It shines resplendent to all the world, that they might know that Jesus Christ is the Redeemer, the Holy One of Israel. It is the only book to which the Lord has personally given His own testimony. Thus saith He, "And he [Joseph Smith] has translated the book, even that part which I have commanded him, and as your Lord and your God liveth it is true" (D&C 17:6). Scientific fact is not needed to prove it's veracity, for the Holy Spirit beareth record. Those who say it is not true, whether having read the Book of Mormon or not, do not and cannot have the Spirit of the Lord in its fulness, for the Church connected therewith is the only Church which has the Authority to give the gift of the Holy Ghost.
These four criterion must be believed in order to find salvation peace in this life, salvation in the next life, and exaltation with God the Father and Jesus Christ. This I know to be true. I add my testimony with God as my witness, in the name of Jesus Christ, amen.