The Book of Light Volume IV begins around 2,000,000 BC with the not entirely safe mysterious entity Narada, whose vibration can also lead to good if one has only wandered the wrong path of evil long enough. This is also decided in the terrible battles between black magicians and white magicians. The veil surrounding Egypt's secret is lifted. We also learn that it is not humans who produce all the great inventions by themselves, but rather it is the work of angels who instruct humanity. We then find out that 800,000 years ago, over 2 billion people lived on Earth; some of these were civilizations that make our current one seem like the Stone Age. There were powerful entities back then that simply thought, and it happened. However, this thinking was also misused, and thus the angels scattered the universal language Senzar (then Sanskrit) among the people.