Latter-day Saints regard the Lord's Prayer, which appears twice in the New Testament and once in the Book of Mormon (Matt. 6:9-13; Luke 11:2-4; 3 Ne. 13:9-13), as a guide for all prayer, whether public or private.
The three versions teach similar principles but are not identical. The Joseph Smith Translation of the Bible clarifies some phrases in the biblical texts.
By praying with their personal heartfelt feelings "after this manner," rather than reciting the Lord's Prayer as a memorized piece, Latter-day Saints seek to find true communion with God the Father, through His Son Jesus Christ."
Source: Scriptures of the Church — Selections from the Encyclopedia of Mormonism, Daniel H. Ludlow, ed.; Sue Bergin, "Lord's Prayer," pages 420-422.
