You Don't Believe in the Virgin Birth, Do You?

Have you ever asked why the virgin birth of our Lord stands so significant and prominent in the Scriptures? What if the Lord Jesus' birth was not a virgin birth? What are the consequences?

Therefore the Lord himself shall give you a sign; Behold, a virgin shall conceive, and bear a son, and shall call his name Immanuel. Butter and honey shall he eat, that he may know to refuse the evil, and choose the good (Isaiah 7:14-15)