φῶς

light, the light, emitted by a lamp, a heavenly light such as surrounds angels when they appear on earth, anything emitting light, a star, fire because it is light and sheds light, a lamp or torch, light, i.e brightness, of a lamp, metaph., God is light because light has the extremely delicate, subtle, pure, brilliant quality, of truth and its knowledge, together with the spiritual purity associated with it, that which is exposed to the view of all, openly, publicly, reason, mind, the power of understanding esp. moral and spiritual truth