The Light (Known as Holy Light) is a mysterious and benevolent force in the universe. It resides in every living being, in every heart and soul. The Light is positive energy, it is every where binding all sentient creatures together as one. Like the Shadow, the light is one of the two most fundemental forces in the universe and one cannot exist without the other.
The Light is the source of all life in the cosmos. Pure Light Dwells in a realm outside the borders of reality but can manifest itself in the physical world as "Holy magic."
Most of the time, the Light will manifest itself as a golden shining light though it has also appeared as white silver light. Both Priests and Paladins are trained to wield the Holy Light. Others such as druids are also trained to use the light though the light tends to appear through moon light and nature opposed to a Paladin or Priests rare form of light.
The Effects of the light is often said to bring about feelings of positive emotion, hope, courage and comfort and a feeling of coming from the heart. The Light grants Paladins and priests additional power against the undead, ensuring that these profane beings corrupt the world no longer. Its power is agonizingly painful and destructive to them. The souls of undead are imperfectly attached to their bodies; the dark magic that sustains them is a buffer that prevents thieir souls from properly joining with their bodies. This is why undead feel only faint sensations of pain or discomfort from most physical stimuli as well as to why the light is so painful to their existence.
Worship of the light tends to practice around chapels where prayer is common. It is said that when a region lacks faith in the light, the region begins to suffer plagues and other nasty tendancies. It is only recently demonic incursions have been added to this list.