The inability to believe in or detect the presence of a divine power in the universe is to be overcome by a threefold process. The first part some people overcome by "hearing" the truth directly uttered by an illumined person or by other people by reading their inspired writings. The second part is to reflect constantly upon the Great Truths. The third part is to introvert the mind in contemplation.
-- Perspectives > Chapter 2: Practices for the Quest > # 14