Joseph Smith’s writings aren’t possible submissions to the Canon of scripture since he was a false prophet/teacher:
In the last few months, a number of Latter-day Saints have found out that thier church’s founder, Joseph Smith, was married to more than 30 women, meaning that Emma was not his one and only wife. Many who know about Smith’s philanderous ways may assume that these women must have been widows or “old maids” and their prophet was doing a favor to them by marrying them. However, the idea that Joseph Smith somehow rescued his plural wives from being single is just not accurate. The fact of the matter is that Smith met the majority of his wives when they were just preteens or teenagers. In fact, about a quarter of Smith’s eventual wives (nine of them) were 12 or younger when Smith met them, even as young as 5 (Sarah Ann Whitney) or 6 (Nancy Winchester). Over the years, Smith nurtured these relationships until he married them, with the vast majority of these marriages taking place between 1841 to 1843. At least a quarter of his wives were no older than teenagers when Smith (who...