Comparison: 3 Nephi 6:14 -> 1 Corinthians 15:58

3 Nephi 6:14 (1830 edition page 466) 1 Corinthians 15:58
and thus there became a great inequality in all the land, insomuch that the church began to be broken up; yea, insomuch that in the thirtieth year the church was broken up in all the land, save it were among a few of the Lamanites, which were converted unto the true faith; and they would not depart from it, for they were firm, and steadfast, and immoveable, willing with all diligence to keep the commandments of the Lord. Therefore, my beloved brethren, be ye stedfast, unmoveable, always abounding in the work of the Lord, forasmuch as ye know that your labour is not in vain in the Lord.