“He That Endureth Not Unto the End, the Same is He That is Also Hewn Down and Cast into the Fire”

Joseph F. McConkie, Robert L. Millet
In this context, those who do not endure to the end are those who do not continually exercise faith in the name of Christ, who refuse to obey his commandments, and who will not demonstrate their love for their fellowmen through service, compassion, and forgiveness. The eternal life-producing endurance requires an enduring change of heart and life that comes only through the Atonement. Without such, a person can neither endure to the end nor attain exaltation in our Father’s kingdom (see 2 Nephi 31:20).

Doctrinal Commentary on the Book of Mormon, Vol. 4

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