You are the intermediary or agent producing light. Light was not created. The origin of the chemical reaction that produced the light was created by the One who created all things.
Oh, I see. You must be thinking of the little bearded man on the yellow and white disk in this creation story:
"In the beginning nothing existed--no earth, no sky, no sun, no moon, only darkness was everywhere.
Suddenly from the darkness emerged a thin disc, one side yellow and the other side white, appearing suspended in midair. Within the disc sat a small bearded man, Creator, the One Who Lives Above. As if waking from a long nap, he rubbed his eyes and face with both hands.
When he looked into the endless darkness, light appeared above. He looked down and it became a sea of light. To the east, he created yellow streaks of dawn. To the west, tints of many colours appeared everywhere. There were also clouds of different colours.
Creator wiped his sweating face and rubbed his hands together, thrusting them downward. Behold! A shining cloud upon which sat a little girl.
"Stand up and tell me where are you going," said Creator. But she did not reply. He rubbed his eyes again and offered his right hand to the Girl-Without-Parents.
"Where did you come from?" she asked, grasping his hand.
"From the east where it is now light," he replied, stepping upon her cloud.
"Where is the earth?" she asked.
"Where is the sky?" he asked, and sang, "I am thinking, thinking, thinking what I shall create next." He sang four times, which was the magic number.
Creator brushed his face with his hands, rubbed them together, then flung them wide open! Before them stood Sun-God. Again Creator rubbed his sweaty brow and from his hands dropped Small- Boy.
All four gods sat in deep thought upon the small cloud.
"What shall we make next?" asked Creator. "This cloud is much too small for us to live upon."
Then he created Tarantula, Big Dipper, Wind, Lightning-Maker, and some western clouds in which to house Lightning-Rumbler, which he just finished.
Creator sang, "Let us make earth. I am thinking of the earth, earth, earth; I am thinking of the earth," he sang four times.
All four gods shook hands. In doing so, their sweat mixed together and Creator rubbed his palms, from which fell a small round, brown ball, not much larger than a bean.
The origin of the chemical reaction that produced the light was created by the One who created all things.
Ah, of course.
Ahura Mazda.
Light is not created by chemical reaction. It is produced by a change in state (energy level) of the electron.