The Dew From Heaven
אהיה־ or the Hebrew Hayah is used over a thousand times in historical passages in the bible and is most often translated "it came to pass". Words must replace punctuation in a language with no punctuation, and the scribe looks for certain words to pinpoint the start of a new thought or sentence.
Stylometry, or Word Print Analysis, is used to discover whether an unsigned text is written by a certain author. It was used to study the Book of Mormon as far back as the 1970's. Depending on the criteria used, to date the tests conclude between 10 and 22 authors, none of which are Joseph Smith or any other known contemporary.
In 1980, Wayne Larsen, Alvin Rencher, and Tim Layton did a statistical analysis of non-contextual words, divded by assumed Book of Mormon authors as well as a few 19th century candidates like Jospeh Smith and Solomon Spaulding.
Four different authors were selected from the Book of Mormon; Nephi, Alma, Mormon, and Moroni. Charts showed that each had a distinct style. They concluded that there were distinct authorship styles, and that they didn't match the 19th century candidates.
"Many people have difficulty believing that a clever author cannot fool a rigorous, quantifiable approach to measuring fixed writing habits. After all, when we read the fictional words of characters created by a good author, we all think the narrative sounds like different people telling the story. Nevertheless, wordprint measurements taken with our most recent methodology continue to show that there are extensive noncontextual word patterns hidden in the narrative that are unique to each author regardless of the character portrayed." ("On Verifying Wordprint Studies: Book of Mormon Authorship", John L. Hilton, Ch. 9)
The Hilton study used a new method, but came to the same conclusions. The authors were internally consistant to themselves only, and none of them were Joseph Smith, Sydney Rigdon or Solomon Spaulding.