Atmic effulgence. (Glossary for the Vahinis)

The lights lit on Deepavali day remove only the external darkness not the darkness within man. Even when the Sun shines brightly, his light cannot dispel the inner darkness. For this purpose, you have to learn a lesson from the external light. For instance, if you want to light a lamp, you need a container. You have to fill it with oil and place a wick in it. you need a matchbox to light the wick. Only when you have all the four accessories can you light the lamp. The lamp cannot be lit if any one of them is lacking. The lamp dispels the external darkness. As the wick burns the oil is consumed. When the oil is exhausted the flame goes out. Saint Ramadas compared human life to a lighted lamp and declared in one of his songs that when the oil ebbs away, neither the wick nor the light will follow the departed. (SSS Vol.24, p. 141)

The city in which the demon Narakasura had his capital was known as Pragjyotishapuram. The name consists of four syllables: Prag, jyoti, sha and puram. Prag means former; jyoti means light; sha means forgetting and puram means the body. Together the term refers to the heart. The inner meaning of the term is that the man in his body is forgetting the light, the Atmajyoti, in him. Nara has various meanings. One is Atma. Another meaning is that which is not permanent. As Nara, man has forgotten his true spiritual state. When bad qualifies enter the city of Nara, man becomes Narakasura (a demonic being). (SSS Vol.21, p. 116)