D&C 133:5, 7,14; Doctrines of Salvation, Smith, 3:305
Chapter 21—Foretells the Mission of Latter-Day Saints & the Destiny of the Land of America in Connection with the House of Israel.
“… the patriarchs and prophets who saw by vision and revelation the last dispensation & fulness of times plainly tell us what is to come to pass. The 49th chapter of Isaiah (1 Nephi 21) is having its fulfillment.” (Wilford Woodruff, as quoted in Isaiah: Prophet, Seer, & Poet, Ludlow, p. 407)