In another place again the same authority gives the following description of the Deity and the emanation of the Sephiroth. “The Aged of the Aged, the Unknown of the Unknown, has a form and yet has no form. He has a form whereby the universe is preserved, and yet has no form, because he cannot be comprehended. When he first assumed the form [of the first Sephira], he caused nine splendid lights to emanate from it, which, shining through it, diffused a bright light in all directions. Imagine an elevated light sending forth its rays in all directions. Now if we approach it to examine the rays, we understand no more than that they emanate from the said light. So is the Holy Aged an absolute light, but in himself concealed and incomprehensible. We can only comprehend him through those luminous emanations (‏ספירות‎) which again are partly visible and partly concealed. These constitute the sacred name of God.” (Idra Suta, Sohar, iii, 288 a.) Four things must be borne in mind with regard to the Sephiroth. I. That they were not created by, but emanated (‏נאצל‎) from, the En Soph; the difference between creation and emanation being, that in the former a diminution of strength takes place, whilst in the latter this is not the case. [7] II. That they form among themselves, and with the En Soph, a strict unity, and simply represent different aspects of one and the same being, just as the different rays which proceed from the light, and which appear different things to the eye, form only different manifestations of one and the same light. III. That since they simply differ from each other as the different colours of the same light, all the ten emanations alike partake of the perfections of the En Soph; and IV, that, as emanations from the Infinite, the Sephiroth are infinite and perfect like the En Soph, and yet constitute the first finite things. [8] They are infinite and perfect when the En Soph imparts his fulness to them, and finite and imperfect when the fulness is withdrawn from them, so that in this respect these ten Sephiroth exactly correspond to the double nature of Christ,—his finite and imperfect human nature and his infinite and perfect divine nature.