"In this verse, Jacob bestows a benediction upon the servants of the Lord who have been zealous and who persevered in His service in the vineyard of our Lord. It reminds us of the words of the angel, who, in speaking for the Lord, said to Nephi, 'And blessed are they who shall seek to bring forth my Zion at that day, for they shall have the gift and the power of the Holy Ghost; and if they endure unto the end they shall be lifted up at the last day, and shall be saved in the everlasting kingdom of the lamb;…'(1 Nephi 13:37)" (Reynolds and Sjodahl, Commentary on the Book of Mormon, vol. 1, p. 484)
Few would doubt that men like Joseph Smith, Brigham Young, Hyrum Smith, John Taylor, Wilford Woodruff, and a hundred others were foreordained to the great work of the Restoration. Joseph F. Smith said of these men, before they were born, they, with many others, received their first lessons in the world of spirits and were prepared to come forth in the due time of the Lord to labor in his vineyard for the salvation of the souls of men (DC 138:56). Sometimes, we underestimate the importance of an event because of our proximity to it. The Restoration of priesthood keys, saving ordinances, and temple worship is the key to saving the entire earth from destruction. This destruction would come with the Second Coming of the Lord. Joseph Smith was told what would happen without the Restoration, If it were not so, the whole earth would be utterly wasted at his coming (JS-H 1:39).