Become blind, deaf and ignorant

"Blind thine eyes, that thou mayest behold My beauty; stop thine ears, that thou mayest hearken unto the sweet melody of My voice; empty thyself of all learning, that thou mayest partake of My knowledge; and sanctify thyself from riches, that thou mayest obtain a lasting share from the ocean of My eternal wealth..."

http://reference.bahai.org/en/t/b/HW/hw-84.html