Dedicated religious observance. Numerous civilizations recognized chanting as a viable expression of veneration, or a means of communing with greater powers.
The Om chant from Tibet acts as a creative spell that reaffirms the self and the Source. In a dream this reflects the birth of a more aware, actualized person who has discovered the Divine within.
Among the Greeks, Mesopotamians, and Egyptians, sacred sounds and words symbolized the originating force within all things, including you!