The Bible code (Hebrew: הצופן התנ"כי, hatzofen hatanachi), also known as the Torah code, is a purported set of secret messages encoded within the Hebrew text of the Torah. This hidden code has been described as a method by which specific letters from the text can be selected to reveal an otherwise obscured message. Although Bible codes have been postulated and studied for centuries, the subject has been popularized in modern times by Michael Drosnin's book The Bible Code and the movie The Omega Code.
Many examples have been documented in the past. One cited example is that by taking every 50th letter of the Book of Genesis starting with the first taw, the Hebrew word "torah" is spelled out. The same happens in the Book of Exodus. Modern computers have been used to search for similar patterns and more complex variants, as well as quantifying its statistical likelihood.
Some tests purportedly showing statistically significant codes in the Bible were published as a "challenging puzzle" in a peer-reviewed academic journal in 1994, and later questioned.
Contemporary discussion and controversy around one specific steganographic method became widespread in 1994 when Doron Witztum, Eliyahu Rips and Yoav Rosenberg published a paper, "Equidistant Letter Sequences in the Book of Genesis", in the scientific journal Statistical Science. The paper, which was presented by the journal as a "challenging puzzle", presented strong statistical evidence that biographical information about famous rabbis was encoded in the text of the Book of Genesis, centuries before those rabbis lived.
Since then the term "Bible codes" has been popularly used to refer specifically to information encrypted via this ELS method.
Since the Witztum, Rips, and Rosenberg (WRR) paper was published, two conflicting schools of thought regarding the "codes" have emerged among proponents. The traditional (WRR) view of the codes is based strictly on their applicability to the Torah, and asserts that any attempt to study the codes outside of this context is invalid. This is based on a belief that the Torah is unique among biblical texts in that it was given directly to mankind (via Moses) in exact letter-by-letter sequence and in the original Hebrew language.