Kabbalah su Pirkei Avoth 5:25

It was taught: Rabbi Simeon said to the colleagues: “How long will we sit in a place of one pillar? As it is written: It is time to act for the Lord (Ps. 119:126). ‘The days are short and the lender presses’ (Avot 5:9). All day the [divine] decree cries out, and they that harvest the field are few. They are the ‘ripe’ [grapes] of the vineyard, and they do not look and do not know properly where they are going. Enter, O colleagues, into the threshing floor (‘idra), dressed in armor and [bearing] spears. Hurry your preparations in counsel, in wisdom, in understanding, and in knowledge, with sight, with [strength] of hands and feet. Make king over you He who has life and death in His power. [That He may] decree words of truth, words which the higher holy ones hear and are glad to hear and know.”

Returning the matter at hand, for the lights loom over the letters and include all the possible sepicific aspects contained in each letter, per my memory. However, only a indivual contained light is apparent to the soul peering at the letters, similar to a coal. With the effort to understand, read over and over and redouble the effort to understand, the lights begin dance in the soul as a flame ignites via a coal. This is all encapsulated in what the Tanna (Pirkei Avot 5:22) says: "Turn it over and [again] turn it over, for all is therein..." - that it is necessary to examine and reexamine words of Torah until the lights are revealed as with revealing the flame within the coal.