In order to reach the summit of this high mount, (the soul) must have changed its garments (resulting in) a new understanding of God in God, the old human understanding being cast aside; and a new love of God in God, the will being now stripped of all its old desires and human pleasures, and the soul being brought into a new state of knowledge and profound delight, all other old images and forms of knowledge having been cast away, and all that belongs to the old man, which is the aptitude of the natural self, quelled, and the soul clothed with a new supernatural aptitude with respect to all its faculties. So that its operation, which before was human, has become Divine, which is that that is attained in the state of union, wherein the soul becomes naught else than an altar whereon God is adored in praise and love, and God alone is upon it …

(Saint John of the Cross)