4 Nephi 1:21

And it came to pass that Amos died also, (and it was an hundred and ninety and four years from the coming of Christ,) and his son Amos kept the record in his stead; and he also kept it upon the plates of Nephi; and it was also written in the book of Nephi, which is this book.

Amos died. It was 194 years since Christ had come. His son Amos kept the record after him. He also kept it on the plates of Nephi. It was also written in the book of Nephi. That is this book.

Amos died—194 years after Christ’s coming. His son, also named Amos, became the record keeper, continuing to write on the plates of Nephi. This is the book you’re reading now.