Ursinus wrote: "Christ was miraculously conceived in the womb of the Virgin, by the immediate action, or operation of the Holy Ghost, without the seed and substance of man, so that his human nature was formed from his mother alone, contrary to the order of things which God has established in nature, as it is said, "The power of the Highest shall overshadow thee" (Luke 1:35)... So we understand and believe that Jesus Christ is a real, historical man.