During the time when Herod was king of Judea, there was a priest named Zechariah, who belonged to the priestly order of Abijah. His wife's name was Elizabeth; she also belonged to a priestly family.
The angel answered, “The Holy Spirit will come on you, and God's power will rest upon you. For this reason the holy child will be called the Son of God.
It was faith that made Abraham able to become a father, even though he was too old and Sarah herself could not have children. He trusted God to keep his promise.