Joseph also went up from Galilee, out of the city of Nazareth, into Judea, to the city of David, which is called Bethlehem, because he was of the house and family of David;
She had a son; she had to go through forty days of purification. If she had a daughter, she would have gone through eighty days of purification. Sort of a punishment for having a girl. Forty days of purification were accomplished.