God, as all the scriptures and the Saints have said, is nameless and unknowable. Then how can we know God? The answer is that the Absolute is not knowable, yet makes Himself known by manifesting Himself as Light and Sound Principle. Most religions tell us that the creation began from these primal manifestations.
Now the divine Light and the divine Sound or "Word" (known variously as Naam, Shabd or Nad) may be contacted by rising above physical consciousness. They exist in a latent form in all of us. Our goal must therefore be to develop them and contact them within us. To do this we must, through meditation, learn to withdraw our soul to its seat behind and between the eyes. Having once contacted the inner Light and Sound, we can progress toward their source, passing from plane to plane until we reach God.
This higher consciousness can be had when we transcend into the beyond. We transcend into the beyond when our attention is withdrawn from all outside and from the body below, rises up to the seat of the soul in the body which is at the back of the two eye-brows. When one reaches there it is just as Saint Plutarch says, "When a man is initiated into the mysteries of the beyond the soul has the same experience of leaving the body as it has at the time of death."
It is not a matter of visualization or feelings or of drawing inferences. It is a matter of pure self-analysis: rising above body-consciousness and to know one's self; to realize that this self is the one who is driving, who is enlivening the whole man-body below and who also enables us to know the world outside. So this is the first step that a Master has always given to be taught.
Now if we know our self, that this power – which is all-consciousness – controls ourselves, we realize that we are a drop of the ocean of all-consciousness. The macrocosmos is in the microcosmos. So we have got (several) bodies which enable us to work in different planes. We have got this physical body which we are conscious of. When we rise above it – we have got the astral body to work in the astral plane. Again we have to rise further – we have got the causal body to work in the causal plane. And if we transcend all those three, we rise into the spiritual planes, which are of all-consciousness.
When once the soul experiences the supreme bliss, all attachments of the world fall off by themselves, lose their glamour and charm. The psyche, freed from oblivion, blossoms forth into a new life – the life of the spirit as distinguished from the life of the senses. This is spirituality, this is the true religion, into the mysteries of which only a Saint or a Master-soul initiates a true seeker by unlocking the door leading to the kingdom of God, which is right within us.
The contact of light and sound are the "saving lifelines" within each individual, and the Master who makes this contact with the divine link is called a saviour, a Godman, or a prophet, or just as one may wish to call Him.