Joseph Smith owned a 1769 King James edition of the Bible. Exact errors from that edition are included in the text of the Book of Mormon.
Inclusion of the exact errors found in the 1769 King James edition of the Bible raise serious questions about the claim that the Book of Mormon was "translated" from its original source (Golden Plates inscribed by prophets) as opposed to plagiarized, at least in part, from other books, including the Bible Joseph Smith had handy at the time.