“The word ‘angel’ is used in the scriptures for any heavenly being bearing God’s message” (George Q. Cannon, Gospel Truth, sel. Jerreld L. Newquist [1987], 54). The scriptures recite numerous instances where an angel appeared personally. Angelic appearances to Zacharias and Mary (see Luke 1) and to King Benjamin and Nephi, the grandson of Helaman (see Mosiah 3:2; 3 Ne. 7:17–18) are only a few examples. When I was young, I thought such personal appearances were the only meaning of the ministering of angels. As a young holder of the Aaronic Priesthood, I did not think I would see an angel....
But the ministering of angels can also be unseen. Angelic messages can be delivered by a voice or merely by thoughts or feelings communicated to the mind. President John Taylor described “the action of the angels, or messengers of God, upon our minds, so that the heart can conceive … revelations from the eternal world” (Gospel Kingdom, sel. G. Homer Durham [1987], 31).
Nephi described three manifestations of the ministering of angels when he reminded his rebellious brothers that (1) they had “seen an angel,” (2) they had “heard his voice from time to time,” and (3) also that an angel had “spoken unto [them] in a still small voice” though they were “past feeling” and “could not feel his words” (1 Ne. 17:45). The scriptures contain many other statements that angels are sent to teach the gospel and bring men to Christ (see Heb. 1:14; Alma 39:19; Moro. 7:25, 29, 31–32; D&C 20:35). Most angelic communications are felt or heard rather than seen. (Ensign, Nov. 1998, 37)