When Moroni raised the "title of liberty" he did more than just rally his people to a defense of their religion, freedom, peace, wives and children. He unified them under a covenant of righteousness that hearkened back to the patriarch Jacob and his son Joseph, through whose lineage they were descended. (See Alma 46:22-23.)
Speaking in April 1995 general conference, Elder Russell M. Nelson of the Quorum of the Twelve spoke of the unifying nature of the covenant of Israel and applied it to today.
"We are also children of the covenant," he said. "We have received, as did they of old the holy priesthood and the everlasting gospel. Abraham, Isaac, and Jacob are our ancestors. We are of Israel. We have the right to receive the gospel, blessings of the priesthood and eternal life. Nations of the earth will be blessed by our efforts and by the labors of our posterity. The literal seed of Abraham and those who are gathered into his family by adoption receive these promised blessings predicated upon acceptance of the Lord and obedience to His commandments. . . .
"At baptism we covenant to serve the Lord and keep His commandments. When we partake of the sacrament, we renew those covenants. We may receive covenants of the priesthood and the crowning blessings of the endowment, the doctrine, and the covenants unique to the holy temple.
"The new and everlasting covenant of the gospel allows us to qualify for marriage in the temple and be blessed to 'come forth in the first resurrection' and to 'inherit thrones, kingdoms, principalities, and powers, dominions, . . . to [our] exaltation and glory in all things.' (Doctrine and Covenants 132:19.)
"Latter-day Saints understand the word of the Lord, who declared, 'I say unto you, be one; and if ye are not one ye are not mine.' " (Doctrine and Covenants 38:27.)
This truth is reflected in this closing line from "Now Let Us Rejoice" the familiar LDS hymn written by William W. Phelps: "And Christ and his people will ever be one." (Hymns, No. 3.)