Question: Why is a part of the Sermon on the Mount referred to as the “Beatitudes”?
Answer: The word beatitude means “to make happy,” “to attain the blessings of heaven,” and “to be fortunate.” The Beatitudes in the Sermon on the Mount, and as given by the Savior in the land of Bountiful, and in the old world, outline the pathway to eternal happiness. Beatitudes are the characteristics and experiences enjoyed by the exalted.
According to John Welch, “Of the 383 words in the total vocabulary of the Sermon on the Mount, one-third of them cast a long temple shadow.”
Source: 400 Questions and Answers About the Book of Mormon by Susan Easton Black, p. 181