"Dominus illuminatio mea"

"We should then in the fullest sense not only with our voice but with our very soul cry out, The Lord is my light and my salvation; whom shall I fear? If he enlightens and saves me, whom shall I fear? Even though the dark shadows of evil suggestions crowd about, The Lord is my light [(Veniant caligines suggestionum, Dominus illuminatio mea)]. They can approach, but cannot prevail; they can lay siege to our heart, but cannot conquer it. Though the blindness of concupiscence assails us, again we say: The Lord is my light [(Veniat caecitas cupiditatum, Dominus illuminatio mea)].  For he is our strength. . . ."

     St. John the Serene (sometimes Peacemaker; Giovanni Scriba or Giovanni d'Acquarola?), Bishop of Naples (Iohannes Mediocris episcopus Neapolitanus, CPL no. ), late 8th century-17 December 849, Sermon 7 =PLS 4, cols. 785-786, as trans. Office of readings for the Thursday of Week Three in Ordinary time, Liturgy of the hours.