The PoGP has a facsimile of portions of the Book of Abraham in the PoGP. Dr. Hugh Nibley concluded that "papyrus scripts given to the Church do not prove the Book of Abraham is true) after the papyri was recovered 40 yrs ago. Brown University egyptologist Dr. Richard Parker examined Joe Smith's supposed "translation" and it bears absolutely no resemblance to the Book of Abraham. In fact, scholars who have translated it come up with a 75-word translation.
Smith came up with thousands of words. A backward "E" translated by Smith as the Book of Abraham 1:13-14 = 76 English words, including 9 proper names & 8 nouns.
Oh, you mean Martin Harris, the Quaker-turned-Universalist-turned-Restorationist-turned Baptist-turned Presbyterian-turned-Mormon? (And that was only before his conversion to Mormonism) Afterward, (after the LDS kicked him out), he changed religions 8 more times (including with the Shakers) & then w/an LDS break-off group, the Strangites. Harris said his testimony for Shakerism was greater than for Mormonism. Just go to a BYU 1955 thesis by Wayne Gunnell and you'll see that the Shakers' "Sacred Roll and Roll Book" was likewise supposedly delivered by an "angel." (BTW, Harris, according to a book, Gleanings by the Way, said he aw the plates via "eyes of faith and not w/natural eyes")
Oh, you mean David Whitmer, who was also excommunicated from the LDS church. According to the Palmyra Reflector (3/19/1831), Whitmer, like Harris, also said he saw the gold plates "by the eye of faith." Whitmer = "dumb beast to ride" & "an ass to bray out cursings instead of blessings" per JS (HoC, vol. 3: 228). Whitmer announced in 1847 (declared to Oliver Cowdery) that he was the prophet of the New Church of Christ.
Or how about Cowdery? Before or as being excommunicated by the LDS church (HoC, 3:16-18), JS said he was the leader of a gang of "scoundrels of the deepest degree (Senate Doc 189, 2/15/1841, pp. 6-9, Comprehensive History of the Church, B.H. Roberts, vol. 1, pp. 438-439). This gang was apparently involved with stealing, lying, perjury, counterfeiting, & adultery.
As a later convert to Methodism, he denied the BoM and publicly confessed sorrow/shame for LDS connection. LDS try to make much of his return to the LDS church in 1848, but Cowdery rejoined efforts after that with LDS apostate apotle Wm McLellin as they tried to raise up a competing kingdom to LDSism.
So you rest your eternal life and faith in these 3?
Non primary sources above from Harvest House Publishers, 1995 pp. 401-404.
Explain why if it's the Holy Spirit's role to testify to Jesus (John 15:26) and glorify Him (John 16:14) why LDS witnesses "of the past" who want to testify of a mere man (even if he was a prophet)?
"Therefore let NO MAN glory in men...Whether paul, or Apollos, or Cephas, or the world, or life, or death, or things present, or things to come...ye are Christ's..." (1 Cor. 3:21-23)
Explain the martyrdom of Joseph Smith.
We did. (Colorcountry's explanation is historically accurate) As history has shown, some criminals have been unjustly lynched. [The lynching doesn't disprove they were criminals; only that the punishment didn't fit the crime] JoeSmith was a criminal from his Kirtland Bank $3 days on (and from that era's perpective, from his glass-looking days onward).
Explain why you and yours find No Evidence of Joseph as a prophet unless it is that there truly are none so blind as those who will not see.
Explain his false prophecies having to do with the temple to be built in Zion (Independence, MO) [D&C 84]. Explain why David Patten was never sent on the mission he was prophesied to go on in the D&C; but instead he died. For other prophecies he made, read History of the Prophet Joseph Smith and check his track record.