However the understanding of this is again becoming aware through the teachings of Lord Swaminarayan and these teachings are still carried by his fifth spiritual succesor HDH Pramukh Swami Maharaj.
Akshar is the choicest devotee of the lord. Can exist in two forms 1. 'pragat'- present on the earth
2. chidakash form as divine light
for more search 'swaminarayan'