Luke 1:31-35: The Miracle of the Incarnation
31 And behold, you will conceive in your womb and bear a son, and you shall name Him Jesus. 32 He will be great and will be called the Son of the Most High, and the Lord God will give Him the throne of His father David, 33 and He will reign over the house of Jacob forever, and there will be no end of His kingdom.” 34 But Mary said to the angel, “How will this be, since I am a virgin?” 35 The angel answered and said to her, “The Holy Spirit will come upon you, and the power of the Most High will overshadow you; and for that reason the holy Child shall be called the Son of God.
Luke 1:31-35