"When you get to the bottom line, it is not a question of whether one can be a Christian and deny the virgin birth. That is to ask, in effect, "How little can once believe and still be a Christian?" I suppose one can believe very little and still be a Christian. One need only know that he or she is a sinner and that Jesus, the Son of God, died for sinners and in their place. Basically that is all one has to know. But we are on the wrong track when we ask the question like that. The real question is, "Is the virgin birth essential, not to be a Christian, but for Christianity?" And at that point we answer with an emphatic "Yes, is certainly is!"
James Montgomery Boice
The Christ of Christmas