Critics of The Book of Mormon and LDS Faith say that since Zenos and Zenock, two supposed prophets, are not mentioned outside the Book of Mormon, it is not an authentic ancient book.  But the Teacher of Righteousness is an example of an ancient Jewish prophet unknown until 1947 when the Dead Sea Scrolls were found.  Also, the Dead Sea Scrolls Thanksgiving Hymns H and J parallel the thanksgiving hymn of Zenos, implying the Dead Sea Scrolls relied on  Zenos writings.  Biblical Antiquities, an ancient work by Pseudo-Philo (unavailable and unknown to Joseph Smith) has the writings of Cenez, Zenec or Zenez (depending on the manuscript), an apparent reference to Book of Mormon Prophet Zenos, making it likely that Kenaz (Joshua 15, Judges 1 and ! Chronicles 4) is the same prophet as Zenos in the Book of Mormon.  The Book of Mormon is vindicated regarding Zenos and Zenock.