Related Posts: The Premortal Life; The Spirit World; Adam-god Theory
See also Elder Jeffrey R. Holland (Apostle), “The Ministry of Angels.”
According to Mormon beliefs angels are children of God sent to perform tasks, minister, and deliver messages. For example, Gabriel visited Zechariah and also Mary the mother of Jesus (Luke 1:19, 26); Joseph Smith was visited by the ancient prophet Moroni (JS-H 1:29-47); an angel comforted Jesus in Gethsemane (Luke 22:43; Matt. 4:11); and Israel was led to the promise land (Ex. 23:20; 32:34; compare Mal. 3:1). It was an angel who carried Lazarus’ spirit to Abraham’s bosom (Luke 16:22) and at the last day angels will separate the righteous from the wicked (Matt. 13:41, 49). These angels are premortal, mortal, postmortal, and resurrected children of Heavenly Father.
In addition to performing tasks angels can also serve as witnesses before God: “Whosoever shall confess me before men, him shall the Son of man also confess before the angels of God” (Luke 12:8); “He that overcometh…I will confess his name before my Father, and before his angels” (Rev. 3:5); “Behold, thou art Nephi, and I am God. Behold, I declare it unto thee in the presence of mine angels, that ye shall have power over this people” (Helaman 10:6).