Words of Mormon serves as a bridge between the two sets of plates that make up the Book of Mormon. Here Mormon gives an explanation of these two records, and his words teach an important message about trusting the Lord, even when we don’t fully understand His direction.

As Nephi was writing the record of his people, God directed him to create two sets of plates, called the small plates and the large plates of Nephi. Nephi didn’t know why he was commanded to create two sets of plates, but he trusted that the Lord had “a wise purpose … , which purpose I know not” (1 Nephi 9:5; see also “A Brief Explanation about the Book of Mormon”).

Centuries later, as Mormon was abridging Nephi’s large plates, he came across the small plates. The small plates covered many of the same events described in the large plates that Mormon had already abridged, but the small plates focused more on spiritual matters and the ministry and teachings of the prophets. God inspired Mormon to include the small plates of Nephi in his record in addition to the large plates.

Like Nephi, Mormon didn’t understand God’s purpose for having both sets of plates, but he trusted that it was “for a wise purpose” (Words of Mormon 1:7).

Today we know what God’s purpose was. In 1828, after Joseph Smith had translated part of Mormon’s abridgment of Nephi’s large plates (116 manuscript pages), Martin Harris lost those pages. God commanded Joseph not to retranslate this portion because evil men would change the words and try to discredit Joseph (see Doctrine and Covenants 10, section heading; Doctrine and Covenants 10:14–19, 30–45). Thankfully, God had foreseen this and provided the small plates, which covered the same history that was lost with the 116 pages. The small plates compose the books that come before Words of Mormon, and Mormon’s abridgment of the large plates begins after the Words of Mormon.