Everyone who believes in God must have His revelation in his spirit, or else what he believes is not God but mere human wisdom, ideals or words. Such faith cannot endure the test.
Watchman NeeWhen one tries to increase his knowledge by doing mental gymnastics over books without waiting upon God and looking to the guidance of the Holy Spirit, his soul is plainly in full swing. This will deplete his spiritual life. Because the fall of man was occasioned by seeking knowledge, God uses the foolishness of the cross to "destroy the wisdom of the wise.
Watchman Nee