The figure is used to describe the whole course of the mystical life -- the soul's progress from the First Mansions to the Seventh and its transformation from an imperfect and sinful creature into the Bride of the Spiritual Marriage. The door by which it first enters the castle is prayer and meditation. Once inside, "it must be allowed to roam through these mansions" and "not be compelled to remain for a long time in one single room". But it must also cultivate self-knowledge and "begin by entering the room where humility is acquired rather than by flying off to the other rooms. For that is the way to progress".