Luke 2:4-7

So Joseph also went up from the town of Nazareth in Galilee to Judea, to Bethlehem the town of David, because he belonged to the house and line of David. He went there to register with Mary, who was pledged to be married to him and was expecting a child. While they were there, the time came for the baby to be born, and she gave birth to her firstborn, a son. She wrapped him in cloths and placed him in a manger, because there was no room for them in the inn.

to Bethlehem, the town of David
John 7:42 "Does not the Scripture say that the Christ will come from David's family and from Bethlehem, the town were David lived?"
Micah 5:2 "But you, Bethlehem Ephrathah, though you are small among the clans of Judah, out of you will come for me one who will be ruler over Israel, whose origins are from of old, from ancient times."

with Mary who was pledged to be married to him
Luke 1:26-27 In the sixth month, God sent the angel Gabriel to Nazareth, a town in Galilee, to a virgin pledged to be married to a man named Joseph, a descendant of David. The virgin's name was Mary.

NOTES:
Bethlehem, town of David
1 Samuel 17:12a Now David was the son of an Ephrathite named Jesse, who was from Bethlehem in Judah.
1 Samuel 20:6 "If your father misses me at all, tell him, 'David earnestly asked my permission to hurry to Bethlehem, his hometown, because an annual sacrifice is being made there for his whole clan.'"

Scriptures taken from the Holy Bible, New International Version® NIV®, Copyright© 1973, 1978, 1984 by International Bible Society. Used by permission. All rights reserved worldwide.