The union of Christ’s two natures is hypostatical and essential [joining Christ’s two essences, divine and human, in one person (hypostasis)], they make one person, but the union of Christ’s person and ours, is spiritual and mystical, they make one mystical body. Yet is there no difference in reality and truth of these unions. Our union with Christ is not a bit less real and true because it is mystical and spiritual; they who have the same Spirit are as truly one as those parts which have the same soul.

William Gouge, Building a Godly Home: A Holy Vision for Family Life, 115.