Sweet is the Word that gives us light, precious above gold and gems; it is to be desired above honey and the honey-comb. For how can it be other than desirable, since it has filled with light the mind which had been buried in darkness, and given keenness to the light-bringing eyes of the soul? For just as, had the sun not been in existence, night would have brooded over the universe notwithstanding the other luminaries of heaven; so, had we nor known the Word, and been illuminated by Him; we should have been nowise different from fowls that are being fed, fattened in darkness, and nourished for death.
Let us then admit the light, that we may admit God; let us admit the light, and become disciples to the Lord. This, too, He has been promised to the Father: I will declare Your name to my brethren; in the midst of the Church will I praise You. Praise and declare to me Your Father God; Your utterances save; Your hymn teaches that hitherto I have wandered in error, seeking God. But since You lead me to the light, O Lord, and I find God through You, and receive the Father from You, I become Your fellow-heir, (Romans 8:17) since You were not ashamed of me as Your brother (Hebrews 2:11).
Let us put away, then, let us put away oblivion of the truth, viz., ignorance; and removing the darkness which obstructs, as dimness of sight, let us contemplate the only true God, first raising our voice in this hymn of praise: Hail, O light! For in us, buried in darkness, shut up in the shadow of death, light has shone forth from heaven, purer than the sun, sweeter than life here below. That light is eternal life; and whatever partakes of it lives.
[St. Clement of Alexandria, Exhortation to the Heathen, Chapter XI]