President Boyd K. Packer explained: “The English word atonement is really three words: at-one-ment, which means to set at one; one with God; to reconcile, to conciliate, to expiate.
“But did you know that the word atonement appears only once in the English New Testament? [Romans 5:8–11] …
“Only once in the New Testament but 39 times in the Book of Mormon. What better witness that the Book of Mormon is indeed another testament of Jesus Christ?” (“Who Is Jesus Christ?” 15).