Meditation is concentration upon God or one of His aspects (e.g., peace, love, joy, calmness, vitality, and also any of his manifestations as in the form of deity or one’s guru).
From the negative side, we strive, in meditation, to relax the body into right posture that is alert yet relaxed; to calm the heart and relax from restless and ceaseless desires or hurts; to calm the mind and relax from its feverish flow of endless but petty thoughts.
Our purpose is to experience a state that is our essence and which is a higher level of consciousness and energy than either the conscious state of mind, or the subconscious state. We call this highest state, the superconscious mind. It is unitive and intuitive. It is the state of our pure Self, the eternal Soul. Superconsciousness is touched on however in stages, like peeking through a window; then gazing, and eventually walking out of the door into the sunlit meadow beyond.