"The Holy Spirit was the Former of Christ’s human nature…. The Holy One [being conceived now (gennoomenon), and later to be delivered or] born, of Mary — should be called the Son of God…. ‘The Holy Ghost shall come upon thee, and the Power of the Highest shall overshadow thee’…. The Lord’s humanity was produced by the Holy Ghost in a supernatural way, which at once obviated the possibility of contracting guilt from Adam…. For He was the Second Adam — the Son of man….
"The questions ‘How could pure humanity [Christ] be derived from a defiled source [Adam] which uniformly entails corruptions on others?’ — is a difficulty which has staggered many." Such as "the Valentinians, the Anabaptists, the Quakers and some modern Plymouthists on the one side; and the entire Church of Rome on the other….