This view that the conception by the Holy Ghost means conception by the Son is consistently held by Hilary throughout his writings. It appears in the earliest of them; in Comm. in Matt. ii. 5, Christ is ‘born of a woman;…Made flesh through the Word.’ So in Trin. ii. 24, He is ‘born of the Virgin and of the Holy Ghost, Himself ministering to Himself in this operation.…By His own, that is God’s, overshadowing power He sowed for Himself the beginnings of His body and ordained that His flesh should commence to exist; and Trin. x 16.