4 Nephi 1:49

And he did hide them up unto the Lord, that they might come again unto the remnant of the house of Jacob, according to the prophecies and the promises of the Lord. And thus is the end of the record of Ammaron.

He hid them for the Lord. They would come back to what was left of Jacob’s family. This would happen just as the Lord had said it would. This is the end of Ammaron’s record.

He hid them for the Lord’s purposes, so they would one day return to the remnant of Jacob’s family, just as the Lord had prophesied and promised. And here Ammaron’s record ends.