Galatians 1:6-9

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Criticism

Some critics have charged that Moroni — the resurrected prophet who gave the Book of Mormon plates to Joseph Smith — was really an angel of Satan. They base this charge on two passages in the New Testament:

For such are false apostles, deceitful workers transforming themselves into the apostles of Christ. And no marvel; for Satan himself is transformed into an angel of light. Therefore it is no great thing if his ministers also be transformed as the ministers of righteousness, whose end shall be according to their works. (2 Corinthians 11:13–15)
But though we, or an angel from heaven, preach any other gospel unto you than that which we have preached unto you, let him be accursed. (Galatians 1:8)

Critics ask, "If Satan can appear as an angel of light, couldn't he have deceived Joseph Smith by claiming to be Jesus Christ or Moroni or any of the other messengers who appeared to him?"

Response

The Bible also contains a test to enable us to judge or, as John says, to "try spirits whether they are of God" (1 John 4:1). If Jesus Christ or Moroni or any of the other messengers who appeared to Joseph Smith failed this test we would know they were ministers of Satan.

John states, "Hereby know ye the Spirit of God: Every spirit that confesseth that Jesus Christ is come in the flesh is of God: And every spirit that confesseth not that Jesus Christ is come in the flesh is not of God" (1 John 4:2–3). Joseph Smith likewise taught, "...if I profess to be a witness or teacher, and have not the spirit of prophecy, which is the testimony of Jesus, I must be a false witness.... [A]ny man who says he is a teacher or preacher of righteousness, and denies the spirit of prophecy, is a liar, and the truth is not in him; and by this key false teacher and impostors may be detected" (Teachings, p. 269).

In the First Vision to Joseph Smith, Jesus Christ was introduced by God the Father as his "Beloved Son" (Joseph Smith—History 1:17). God the Father was, in essence, witnessing that Jesus Christ was his Only Begotten Son just as he had done when Jesus "came in the flesh" and was baptized (Matthew 3:17; Mark 1:11). In a subsequent appearance Jesus identified himself as "the first and the last...he who liveth...he who was slain" (D&C 110:4). Jesus Christ was testifying that he was the same person who lived in the Holy Land and crucified for our sins. He confirmed that he indeed came "in the flesh" to accomplish the atonement.

The angel Moroni who appeared to Joseph Smith also confirmed that "Jesus Christ was come in the flesh" by quoting Old and New Testament scriptures which were fulfilled with his coming (Joseph Smith—History 1:40). He also stated that his (Moroni's) purpose was to reveal a book "giving an account of the former inhabitants of this continent" and containing the "everlasting Gospel...as delivered by the Savior" following his mortal ministry. The stated purpose of the Book of Mormon is in fact to convince both "Jew and Gentile that Jesus is the Christ" (title page); as such, it is subtitled Another Testament of Jesus Christ. Latter-day Saints believe it to be a second witness, after the Bible, of Jesus Christ's divine mission. If Moroni were Satan or one of Satan's ministers acting as an instrument of evil, he surely would not have done so much to convince mankind to believe in Christ; it goes counter to Satan's purpose (Matthew 12:25).