As I have mentioned, pure light is invisible. One writer has pointed out that a scientific analysis of sunlight reveals that it consists of three kinds of rays. (1) Chemical rays or actinic. These rays are invisible and can neither be seen or felt. (2) Light rays. These rays can be seen but never felt. (3) Heat rays. These rays are felt but are never seen. GOD IS LIGHT, and in Him there is no darkness at all. Therefore God, in a spiritual way, has His being, function, and expression on those three levels. We know that God has revealed Himself as Father, Son, and Holy Spirit. The Father corresponds to the chemical rays of sunlight. No man hath seen God at any time. The Son, who is the light of the world, corresponds to the light rays which are reflected, the One whom we can see but not feel. The Holy Spirit corresponds to the heat rays, since He is felt in the lives of believers but is never seen. Now, these are not three kinds of light, but three dimensions of the one reality of light. In like manner, Father, Son, and Holy Spirit are not three individual Gods, but three dimensions, three expressions, or three operations of the one and only God!