1 Nephi 15:20

and I did rehearse unto them the words of Isaiah, which spake concerning the restoration of the Jews, or of the House of Israel; and after that they were restored, they should no more be confounded, neither should they be scattered again. And it came to pass that I did speak many words unto my brethren, that they were pacified, and did humble themselves before the Lord.

I repeated to them the words of Isaiah, who spoke about the restoration of the Jews, or the House of Israel. After they are restored, they will no more be confused, and they will not be scattered again. I spoke many words to my brothers, so they became peaceful and humble before the Lord.

I quoted Isaiah’s prophecies about Israel’s restoration—how they’d never be confused or scattered again after they return. I said so much that my brothers finally calmed down and humbled themselves before God.