Plotinus the ecstatic is sure …that the union with God is a union of hearts: that ‘by love He may be gotten and holden, but by thought never.’ He, no less than the medieval contemplatives, is convinced …that the Vision is only for the desirous; for him who has ‘that loving passion’ which ‘causes the lover to rest in the object of his love.’ Evelyn Underhill, Mysticism P. 252
A union with God can be accomplished only through a joining of hearts—the heart of the mystic with the heart of God. Thus God and the mystic may be joined together through love of one another but will not find it possible to be joined through thought of one another alone.
A Vision of God may be ascertained only by that one who is desirous of the vision of God. The contemplative or mystic must have a loving passion for God and desire to rest in God, the very object of his love.
c Judith Lawrence