Final answer:
The role of the Lord's covenant people in Mormon belief involves adherence to commandments, serving as an example to others, and preparing for the Second Coming. These principles resonate with the religious journeys of ancient Israelites and are embodied in the history and mission of The Church of Jesus Christ of Latter-Day Saints.
Step-by-step explanation:
The passages from 1 Nephi 22:9 and 3 Nephi 20:27 in the context of Mormon beliefs point towards the covenant responsibilities of the Lord's people. Importantly, the role of the Lord's covenant people includes being faithful to the commandments, serving as a light to other nations, and preparing for the Second Coming of Jesus.
The teachings found within these verses are reflective of the wider commitments made by believers in the Biblical narrative, including those made by ancient Israelites under Moses as described in other scriptural references.
The Mormons, or members of The Church of Jesus Christ of Latter-Day Saints, see themselves as a continuation of this covenant tradition. With the foundation of their religion rooted in the revelations given to Joseph Smith and the authority of the Book of Mormon, adherents view their mission as one of restoration and preparation for Christ's millennial reign.
Central to this is living a life guided by the commandments and seeking to establish a “pure kingdom of Christ” as mirrored in their historical journey to Utah under Brigham Young's leadership.