The virgin birth: doctrine of deity

The author points to J.Gresham Machens book on 'The Virgin Birth' as one of the classic evangelical defenses of the doctrine. So why write this book, Gromacki thinks that Machen's book was heavy and that it was written for intellectuals who were familiar with the critical liberal approach. Thus this book was written for the interested layman and formally trained Bible students. As to the importance of the doctrine Mr. Gromacki rightly points out( in dealing with the true humanity that Jesus had),that to be considered truly orthodox one must believe that Jesus was truly a man as well as being fully God. Any book that addresses 'The Virgin Birth' must of necessity consider the hypostatic union of the two natures of Jesus Christ. In part IV of the book entitled 'The Results of the Virgin Birth' the chapters are concerned with :the humanity of Christ,the two natures in one person and the sinlessness of Christ.There is much historical Christological doctrine set forth in a clear and concise manner.The author has great ability on a subject ,that is complex and difficult to grasp, to write with precision and clarity. On p.111 he addresses one aspect of the hypostatic union"He was also one person with two wills. If Christ truly had two natures,then He must have had two wills,one human and the other divine. ... each nature,in order to be whole and entire,must have all its essential elements. ...thus in Christ,two natures or substances(oustai),constitute one personal subsistence(hupostasis)." The third section of the book entitled 'The Nature of the Virgin Birth' has a chapter that deals with erroneous concepts. He deals briefly with some unBiblical teaching of the Roman Catholic Church re-The Virgin Birth. I will list a couple of things that are briefly addressed:1.The incarnation and the Virgin Birth do not cause Mary to become 'The mother of God',2.The incarnation and Virgin Birth do not involve the perpetual viginity of Mary. Equally as important as looking at false teaching re-The Vigin Birth Part v has 3 chapters that focus on the purpose of the virgin birth. This is in contrast to Mel Gibson's movie 'The Passion of Christ' which focused on the actual suffering but almost overlooked completely the purpose for the suffering. I believe this is the most helpful book,available to Christians, on the doctrine of 'The Virgin Birth'.