- Zacharias priestly course of Abijah points to time of the conception time of John the Baptist (Luke 1:5,8,23)
- then there is the missed period (1 month) when Elizabeth goes to the hill country to hide herself for five months (Luke 1:24) shown as the six month: June (Luke1:26) (Note: given 5 months +3 months until birth, conception must have happened shortly after Zacharias finished his priestly course)
- Jesus' conception can be linked to this June date because Mary arrives at Elizabeth's house fearing conception before betrothal ("with haste" therefore in panic) (Luke 1:39,40)
- Shortly after this, Mary's missed period confirms the conception (the image of the child jumping in her belly (Luke 1:41)
- from Elizabeth's six months follows three months and then she returns to give birth to John the Baptist in September (Luke 1:56,57)
- With Mary having conceived in late June, the birthday of Jesus would be in March, he being just 6 months younger that John the Baptist.
Thus if it can be proved that Zacharias finished his course and had sex with Elizabeth in late December, this would confirm the above series of events and Christian would have to accept that Jesus was not born at Christmas.
The problem with those who have worked it out the priestly course of Abijah was that they tried to follow the Jewish Calendar with all its idiosyncrasies with the idea that the priestly courses had to be adjusted to fix calendar years. Then being biased in believing that Jesus was born on Christmas and also still confused by Luke's nativity, they fudged the numbers. Instead, they needed to follow the direction of the Essenes by strictly adhering to the rules of Enoch and the laws of King David as the Essenes have done. By reference to the Essene calendars in the Dead Sea Scrolls, the calculation is simplified and obvious: just subtract sets of 24 weeks.
Now it is true that the year cannot be predicted directly from Luke Chapter 1, but it can be predicted by Luke chapter 2: the Census of Quirinius in 6AD when Mary and Joseph had to go to Bethlehem.
(see YOUTUBE video: Jesus Journeys #1 - Bethlehem)
and the blog from Feb 2011 here titled: "Jesus' Birthdate: Duh! Luke shows his Bar Mitzvah". That title says it all: Jesus was 12 years old at his Bar Mitzvah at the census of Cyrenius taxation) (7BC (-1 because no zero between BC and AD) +6AD). If Jesus was born in 7BC then he was conceived in 8BC and John the Baptist in December of 9BC, so if we find that Zacharias ended his priestly course in December 9BC, then we will have proved Jesus' birth in March. This is the first time that you will see the calculations done in the correct manner, but is is just one piece of the coherent whole which is the
Pesher of Christ.
Briefly, since we know that the first priestly course of Jehoiarib was occurring at the fall of the Temple of Jerusalem in 70 AD, it is possible to go backwards to 9AD and then forward 8 cycles weeks to Abijah, to the cycle of Zacharias, which can be shown at the Pesher of Christ website to be JD 1718484 Sabbath December 14 9BC.