Some five hundred years before the arrival of Emmanuel, the prophet Isaiah, prophesied that Emmanuel would come. ” Therefore the Lord himself will give the sign: The virgin will conceive and give birth to a son, and will call him Immanuel” (Isaiah 7:14).

Thus, when it was nearing time for Emmanuel’s arrival, God sent the angel Gabriel to reveal His plans to the chosen virgin:

“And in the sixth month He sent the Angel Gabriel unto a city in Galilee, named Nazareth, to a virgin espoused to a man whose name was Joseph, of the house of David; and the virgin’s name was Mary.

Subsequently, the angel came in unto her, and said, Hail, thou that art highly favored, the Lord is with thee: blessed art thou among women.

When she saw him, she became troubled at his saying, and cast in her mind what manner of salutation this should be.
And the angel said unto her, Fear not, Mary: for thou hast found favor with God.
Behold thou shall conceive in thy womb, and give birth to a son, and shall call his name JESUS” (Luke 126-31).
When Joseph heard the news, he became distraught.”How could this be? He thought. Mary and I have not come together yet! I must divorce her before everybody finds out.”
“As he contemplated this, an angel of the Lord appeared to him in a dream. “Joseph, son of David,” the angel said, “do not be afraid to take Mary as your wife. The child she is carrying is of the Holy Spirit” (Matthew 1:20).

“So it came to pass that there went Joseph up from the town of Nazareth in Galilee to Judea, to Bethlehem the town of David. He went there to register with Mary, who had pledged to marry him and was expecting a child. While they were there, the time came, and Mary gave birth to her firstborn, a son. She wrapped him in cloths and placed him in a manger because there was no guest room available for them” (Luke 2:4-7)