Many members of the LDS church believe Shem, the son of Noah and the father of all the Semitic races, and Melchizedek, the famous high priest to whom Abraham paid tithes, to be the same person. Indeed, a short essay on the LDS Church’s own website by Alma E. Gygi, a Salt Lake City businessman, entitled “Is it Possible that Shem and Melchizedek are the Same Person?” provides arguments in support of this conclusion, see here. This essay will attempt to demonstrate why Melchizedek was not Shem, but will also use this issue as a case study in how careless we can be in adopting religious beliefs. The Melchizedek-Shem issue is relatively trivial, but too often, the same failure to require solid foundations for our beliefs leads to other mistaken conclusions on far more consequential doctrinal matters.
The first major piece of evidence that Shem wasn’t Melchizedek is one that Mormons too often ignore–neither the biblical writers nor the more accurate Book of Mormon writers, though they were writing on the very subject of the greatness of Melchizedek, mentioned anything about him being Shem, or being the son of Noah. If a proponent of the Shem=Melchizedek theory is willing to ignore this point, she should first show that Bible and Book of Mormon writers commonly referred to one person using two different names without informing the reader that both names referred to the same person. But such a showing can’t be made; indeed, the opposite is true.