It’s fairly easy to read a text and imitate its style. As for his third grade education, I would wager that a third grade education in Smith’s time would produce a much better reader (and writer) than a third grade education in our day. Reading and writing were the only subjects in school, and they would have gotten much more coverage than they do today. Lastly, the Bible’s stories and language was much more a part of the society of Smith’s day than ours. Biblical language and stories would have been learned similarly to talking: seemingly absorbed, not purposely taught.