Analysis of information sources in references of the Wikipedia article "Ohr" in English language version.
The mystics have a special affinity for the term Or because its numerical value (gematriya) is equivalent to that of raz (mystery): "'Let there be light' (Gen. 1:3)-i.e., let there be Raz (Mystery; Concealment); for Raz and Or are one thing"; Zohar I:140a and Zohar Chadash, Bereishit:8d; see Tikunei Zohur 21:53b, and cf. R. Moses Cordovero, Or Ne'erau (Fuerth,1701),111:ch.4.