Ascent of Mount Carmel (iv.ii)
This is how John defines a "beginner" in prayer.
3. And this first night pertains to beginners, occurring at the time when God begins to bring them into the state of contemplation; in this night the spirit likewise has a part, as we shall say in due course. And the second night, or purification, pertains to those who are already proficient, occurring at the time when God desires to bring them to the state of union with God. And this latter night is a more obscure and dark and terrible purgation, as we shall say afterwards. (Ascent I.I.3)