Why do we light a lamp?
In almost every Vaishnava home a lamp is lit daily before the altar of the Lord. In some houses it is lit at dawn, in some, twice a day at dawn and dusk and in a few it is maintained continuously (akhanda deepa). All auspicious functions commence with the lighting of the lamp, which is often maintained right through the occasion.
Light symbolizes knowledge, and darkness, ignorance. The Lord is the "Knowledge Principle" (Chaitanya) who is the source, the enlivener and the