“Mosiah Received Them with Joy and He Also Received Their Records”

"It was with great joy that King Mosiah and the people of Zarahemla received their brethren from Lehi-Nephi. They had thought that Zeniff and their friends and relatives who had accompanied him to the old homes of their fathers had been slain. They had heard nothing from them, and presumed that all of them had been destroyed. Now that they had become united and once again could dwell in peace, 'songs of delight filled each grateful heart.' We may imagine the deep sense of thankfulness that arose from their lips as their leaders proclaimed the goodness of God in delivering them from Lamanite bondage. Another cause of rejoicing in Mosiah's heart was that the people from Lehi-Nephi had preserved their records." (Reynolds and Sjodahl, Commentary on the Book of Mormon, vol. 2, p. 240)

"The early history contained in the Book of Mormon is obtained from three sets of plates: the brass plates of Laban, the small plates of Nephi, and the large plates of Nephi. However, when Limhi's people join with the people of King Mosiah in the land of Zarahemla they bring with them two additional sets of plates: (1) their own records, which are known as the record of Zeniff, and (2) the 'records which had been found by the people of Limhi,' which are later identified as the records of Ether. (See Ether 1:1-2.) When Alma and his people come into the land of Zarahemla, they also evidently bring their own records with them. (See Mosiah 25:6 and also the superscription before Alma, chapter 23.)" (Daniel Ludlow, A Companion to Your Study of the Book of Mormon, p.188)