God is fire and He is so called by all the inspired Scripture (cf. Heb. 12:29). The soul of each of us is a lamp. Now a lamp is wholly in darkness, even though it be filled with oil or tow or other combustible matter, until it receives fire and is kindledů The man whose soul's lamp is still in darkness, that is, untorched by the divine fire, stands the more in need of a guide with a shining torch who will discern his actions.
(Saint Symeon the New Theologian)