Pastor and writer A. W. Tozer lacked even a high-school education, but he read the great Christian mystics and theologians until he could read and write about them with facility. Tozer challenges:

Come near to the holy men and women of the past, and you will soon feel the heat of their desire after God. They mourned for Him, they prayed and wrestled and sought for Him day and night, in season and out, and when they had found Him, the finding was all the sweeter for the long seeking. Moses used the fact that he knew God as an argument for knowing Him better. "Now therefore, I pray thee, if I have found grace in thy sight, show me now thy way, that I may know thee, that I may find grace in thy sight"; and from there he rose to make the daring request, "I beseech thee, show me thy glory." God was frankly pleased by this display of ardor, and the next day called Moses into the mount, and there in solemn procession made all His glory pass before him.