Julian Jaynes has written on this verbal/non-verbal dichotomy in
The Origin of Consciousness in the Breakdown of the Bicameral Mind, in which he
literally defines god to mean those phenomena related to right hemispheric structures and activities in the brain that are communicated over the anterior commissures and interpreted by left hemispheric language centers as speech; hence the many mystical reports of "hearing the voice of god" as passed down through the aeons. Such phenomena have gone by many other names: gods, the genius, the higher self, the HGA... though this metaphysical and spiritual terminology is best understood as referring to non-verbal, non-rational, non-linear forms of cognition that are closer to free association and intuitive pattern matching (similar to Kahneman's "System 1" thinking). There even exist certain mystical traditions which purport to facilitate deeper connections with this subsystem of the mind; see for instance Eshelman's accounting of the western esoteric tradition in
The Mystical and Magical System of the A.'.A.'. at [0] (currently defunct pending the restoration of the Internet Archive).
[0] https://archive.org/details/a-a-the-mystical-and-magical-sys...