History of Joseph Smith, by His Mother, pg. 83; “During our evening conversations, Joseph would occasionally give us some of the most amusing recitals that could be imagined. He would describe the ancient inhabitants of this continent, their dress, mode of traveling, and the animals upon which they rode; their cities, their buildings, with every particular; their mode of warfare; and also their religious worship. This he would do with as much ease, seemingly, as if he had spent his whole life among them.
On the twenty-second of September, 1824, Joseph again visited the place where he found the plates the year previous; and supposing at this time that the only thing required, in order to possess them until the time for their translation, was to be able to keep the commandments of God—and he firmly believed he could keep every commandment which had been given him—he fully expected to carry them home with him.”
2 Peter 2:1; “But there were false prophets also among the people, even as there shall be false teachers among you, who privily shall bring in damnable heresies, even denying the Lord that bought them, and bring upon themselves swift destruction.”
Again, why is Joseph giving descriptions of these people if he hasn’t translated the plates yet? At this point (1824), Joseph doesn’t even have possession of the plates!