Hinduism and faiths of the world recommend the use of the lamps and lights. The same symbolises the absence of darkness and grief. The lighting of an oil lamp or deepam means that you have sought divine intervention and as a result, you bow down to knowledge to remove darkness from the homes.
It is customary to light lamp before starting any of the auspicious or ceremony and is one of the constant features of the Indian Pooja. By lighting lamps, the glow of the Almighty is spread to all areas of the home. It is believed that the vibration that emerges from the same will work as vastu protection that restores the lost peace.