1 Nephi 11:13-15 And it came to pass that I looked and beheld the great city of Jerusalem, and also other cities. And I beheld the city of Nazareth; and in the city of Nazareth I beheld a virgin, and she was exceedingly fair and white.
14 And it came to pass that I saw the heavens open; and an angel came down and stood before me; and he said unto me: Nephi, what beholdest thou?
15 And I said unto him: A virgin, most beautiful and fair above all other virgins.
We believe that Jesus was born of a virgin. The Bible states it and the Book of Mormon affirms it. The Saviour’s birth was truly miraculous.
This scripture also tells us that Mary’s role was foreordained. Nephi saw this most choice of Eve’s daughters in vision 6 centuries before her mortal appearance on the earth.