There is additional proof that Jesus was born in the fall of the year. The census of Quirinius that required Joseph to travel from Galilee to Bethlehem would most probably have taken place after the fall harvest when people were more able to return to their ancestral homes (
Luke 2:1-5). Besides, it was customary in Judea to do their tax collecting during this period, as the bulk of a farmer's income came at this time.
Another point is that Joseph and Mary had to find shelter in a barn or some other kind of animal shelter like a cave or grotto because the inns were full (verse 7). This indicates that the pilgrims from around the world had begun to arrive in Jerusalem and surrounding towns. Thus, the fall festival season had already commenced. There would have been no similar influx of pilgrims in December.
Also, as the shepherds were still in the fields with their flocks (verse 8), Jesus' birth could not have occurred during the cold-weather months of winter. Sheep were normally brought into centrally located pens or corrals as the weather turned colder and the rainy season began, especially at night. If this were not significant, it begs the question, "Why would Luke have mentioned it in such detail if not to convey a time reference?"
.
