You may have heard this elsewhere... I have no doubts that this probably has occurred to others as well... but it is something that occurred to me spontaneously, so to speak.
The main thing that convinced me that mormonism was false was when I took notice of the fact that the Book of Mormon is written with Thees, and Thous, and Begats, etc etc. The same sort of lingua which one encounters in a King James Bible. What struck me as odd was the realization that the Bible was written in that manner because in the time of King James everyone spoke that way. That is how English was spoken in that age. However, the Book of Mormon also is written in that form of English, when at the time the Book of Mormon was written English was NOT spoken in that manner, and in fact was much more like we speak it today.
So it occurred to me to wonder WHY it would be written in that manner. It appears to me that the language of King James era was intentionally used to lend the Book of Mormon a greater appearance of authority. An attempt to fool us all into believing it is equal to the Bible by mimicking the speaking style. In order to lend it credibility, a form of deception was used. And in the end, I have a real problem with reconciling the notion that God would resort to deception in order to further his goals. Deception is a tool of the other guy.
Bingo.
The BOM plagiarizes the Bible some 25,000 times, and the King James version of the Bible that was widely used in American in the 19th century was first published in 1611 by the Church of England.
The problem is that the BOM was supposedly translated from plates written hundreds of years before even 1611.............so........"Houston, we have a problem."