 What does mystical theology really refer to? So mystical theology is an approach to theology which has its ultimate goal in contemplation in the leaving behind of all thoughts and words and concepts to have this encounter with God, an unmediated encounter with God. I saw a quote once that said Bonaventure was the saint who did theology on his knees. Theology for him was a spiritual work because the purpose of it was to enlighten the mind and motivate the heart to be more intimate with God. His mysticism is always firmly grounded in a strong and solid theology, but his theology is always done with a prayerful humility and openness to this, as he would describe it, illuminating ray of light.