Through perseverance the meditator gradually builds matter of a finer quality into the three bodies. For example, meditation will gradually replace the fourth grade matter of the etheric body with matter from the third etheric subplane. Similar changes will take place in the meditator's emotional and mental bodies. In addition, the centers in one's equipment will, be activated in the precise order that is correct for each meditator according to his particular ray makeup and place in consciousness. These kinds of changes take place subjectively over extended periods of time and render the meditator's mechanism pure, translucent, resilient, and very, very sensitive and fit for contact with the Real.
Meditation raises energy from lower to higher centers.
And it is not without risk, by the way, that one stops meditation after some success. The raised energy can and does fall back into the lower centers where it can and does cause any number of problems, both psychological and physical. Courage and perseverance are bottom line essentials in this kind of meditation work. Developments which are the result of occult meditation occur from the inside out or from the top down. A worked at and sustained meditative effort will, over a period of years, quiet the mental body and bring it more and more under the control of the meditator.