“The soul has three coverings: the material, the astral, and the causal. The soul employs these bodies in their respective regions, but its True Home is in the fourth realm, which is beyond these three.” In this material world there are lots of snares and obstacles to keep the soul bound within this physical world. But when the soul goes to the astral plane there are so many temptations and allurements in its way that its fall is almost unavoidable. The allurements in the causal region are correspondingly greater and more subtle than those in the lower regions.
“Beyond these three planes lie the pure spiritual regions. It is impossible to enter them much less to traverse them without a Master. To traverse this Path is like walking on the razor’s edge. There are dangers involved at every step. Thus, the seeker who wishes tp unravel the Mysteries of the Ultimate, who wishes to attain True Knowledge and to get united with the Lord will need to seek a perfect Master who is fully acquainted with the Path.” (Encyclopaedia of Saints of India, Volume 19: Radhasoami)