Luke 2:5

Weymouth NT

to have himself registered together with Mary, who was betrothed to him and was with child.

See the chapter Copy

Just at this time an edict was issued by Caesar Augustus for the registration of the whole Empire.

and all went to be registered–every one to the town to which he belonged.

So Joseph went up from Galilee, from the town of Nazareth, to Judaea, to David's town of Bethlehem, because he was of the house and lineage of David,

But while they were there, her full time came,