Original sentence: He died in full fellowship with The Church of Jesus Christ of Latter-day Saints, making it a point to tell all those who saw and visited him in his later years of his testimony of Joseph Smith and as a witness to the Book of Mormon plates
Edited sentence: The assumption that he never recanted his belief in the LDS faith is not thoroughly established (aside from two or three signed affidavits signed by Harris), but instead is assumed by those around him when he died (as he called in these friends who held legal status - doctor and lawyer - to witness that he was of sound mind when affirming the book's truthfulness on his deathbed) who happened to be Latter-day Saints.These individuals (and only these individuals, and many others - at least a dosen or more according to one book "The witnesses of the Book of Mormon" - who he had told) told others that he affirmed his LDS faith (after he made them promise to do so, so people would not question)