The Sealing Power stands as one of the most profound and distinctive doctrines of The Church of Jesus Christ of Latter-day Saints, representing the authority by which sacred ordinances performed on earth are recognized and bound in heaven. This divine authority, given by God to His prophets, ensures that marriages, families, and other sacred covenants extend beyond mortality into eternity. This power is rooted in biblical precedent, reaffirmed through latter-day revelation, and holds a central place in the work of salvation.

The scriptural foundation of the Sealing Power is found in the Lord’s words to Peter in the New Testament: "And I will give unto thee the keys of the kingdom of heaven: and whatsoever thou shalt bind on earth shall be bound in heaven: and whatsoever thou shalt loose on earth shall be loosed in heaven" (Matthew 16:19). This statement underscores the principle that sacred acts performed by divine authority on earth carry eternal significance. This power was also exercised by Elijah, as recorded in the Old Testament. In the closing verses of Malachi, the prophet declared: "Behold, I will send you Elijah the prophet before the coming of the great and dreadful day of the Lord: And he shall turn the heart of the fathers to the children, and the heart of the children to their fathers" (Malachi 4:5–6). The fulfillment of this prophecy is recorded in modern scripture when Elijah appeared to Joseph Smith and Oliver Cowdery in the Kirtland Temple on April 3, 1836, conferring upon them the keys of this priesthood power (Doctrine & Covenants 110:13–16).

The restoration of the Sealing Power in this dispensation serves a critical role in the overarching plan of salvation. Through this authority, families may be sealed together for eternity, ensuring that marital and familial bonds continue beyond the grave. The significance of this doctrine is emphasized in latter-day revelation: "And verily I say unto you, that the conditions of this law are these: All covenants, contracts, bonds, obligations, oaths, vows, performances, connections, associations, or expectations, that are not made and entered into and sealed by the Holy Spirit of promise, of him who is anointed, both as well for time and for all eternity, and that too most holy, by revelation and commandment through the medium of mine anointed, whom I have appointed on the earth to hold this power... are of no efficacy, virtue, or force in and after the resurrection from the dead; for all contracts that are not made unto this end have an end when men are dead" (Doctrine & Covenants 132:7). This passage establishes the eternal nature of ordinances performed under this power and the necessity of divine authority in making covenants binding beyond mortality.

The Sealing Power is administered within the sacred walls of temples, where authorized priesthood holders officiate in the performance of eternal ordinances. Temple marriage, known as sealing, is among the most sacred of these ordinances, ensuring that the marriage covenant extends into the eternities. Additionally, vicarious sealing ordinances allow individuals who have passed beyond the veil the opportunity to be bound to their families, fulfilling God’s promise that His children would not be left without the blessings of eternal kinship.

Distinct from many other religious traditions, which may view marriage as a temporary or civil arrangement, the doctrine of eternal sealing provides an unparalleled perspective on the nature of human relationships. While some faiths emphasize the importance of family unity and religious marriage rites, the explicit authority to bind these relationships beyond mortality is uniquely asserted in the Church. This understanding not only provides great comfort to those who mourn the loss of loved ones but also reinforces the divine pattern established by God from the beginning. The Sealing Power thus represents an essential and irreplaceable component of God’s work on earth, affirming His desire to gather His children into eternal families through the authority He has bestowed upon His prophets in these latter days.