Teach Us to Number Our Days

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Daniel's 70-week Prophecy According to Sir Isaac Newton

Document : Observations Upon The Prophecies of Daniel, and the Apocalypse of St. John

             by Sir Isaac Newton, 1733


Prophecy Begins according to Sir Isaac Newton in latter half of the 3rd year of the 80th

Olympiad and he identifies the Ezra 7:10-26 commandment to beautify the House of God in

Jerusalem, in the 7th year of Artaxerxes King of Persia. Year 3 of the 80th Olympiad began in

July-Dec of 458 BC also known as the Julian period 4256. The later half is dated by Sir Isaac as the

Julian Period 4257 which would have been January - June 457 BC (pg 131). 


Prophecy Terminates in the Passover month of Nisan per Matt 26:2 :

The Death of Jesus is identified by Sir Isaac Newton as the culmination of Daniel's

prophecy of 70 weeks or 490 years. He dates this as Friday, Nisan 14, 34 AD and the

Julian date of April 23 when Jesus would have been cut off or crucified (pg 163).


Prophecy Duration

Newton, in trying to establish a solution for the 70-week prophecy, rejected the use of

Jewish years based on 360 days. He further rejected the use of  lunar years based on

354 days even though as a mathematician he was fully capable of handling either scenario.

Newton used the Jewish luni-solar year.


490 Solar Years with 365.242199 days/year.

490 x 365.242199 days = 178,968.67 days

178,968.67 days / 365.25 days/Julian year =

489.989 Julian years rounds to 490 Julian years.


Crude Verification Mathematics :

457 BC to 34 AD = 457 + 34 - 1(no zero BC) = 490 yrs (non-inclusive) 


Semi-fine Verification Mathematics of Sir Isaac Newton : 

490 x 365.25 days =

178,972 days

   -   4 days to account for Apr 23-Apr 27

173,968 days (non-inclusive)


Fine Verification Mathematics

Computer programs that add up each day in the Julian calendar shows the total count is

173,968 days which is an exact match! A closer look at his accounting shows that he

went from one Julian date to another Julian date and followed the Julian calendar

rule of using the average Julian year of exactly 365.25 days. Thus far no errors.


Although Sir Isaac’s solution is tempting, it can not accepted that Ezra would dare launch

into repairing the city, the street and the defensive walls using the leftover funds

earmarked for beautifying the house of God since such a project would more than dwarf

the King’s project aimed at adding the final touches to beautify the temple. Ezra had to

be responsible to King Artaxerxes, and he knew full well that the King’s decree was

focused on the temple’s beautification and not on building the wall of the city. Thus his

Biblical starting point command is suspect at the very start. 


Astronomical programs have confirmed that Nisan 1 (crescent new moon) in 34 AD was the

Julian date of the evening of April 8. Thus, the daylight portion of Nisan 1 would have

been the next Julian day (which advances upon the stroke of midnight) or April 9th.  

When we convert April 8, 34 AD to the Gregorian Calendar we arrive at April 6.

However, if we consider the previous month as being Nisan then the Gregorian date for

the 1st day would be the evening of March 8th. In such cases where both dates are

outside the Barley Ripe window (March 10th to April 4th) the April date is selected

because it ensures a ripened harvest. This confirms that Sir Isaac Newton has

indeed  selected the Hebrew month of Nisan for the end of the prophecy.


It should be noted that in 34 AD Nisan 14 would have occurred on a Thursday even

though Mr. Newton is emphatic concerning a Friday crucifixion. To solve this he appeals

to the Jewish rules that postpone a Hebrew month by one day. Of course such rules came

about after the Jews had been driven out of Jerusalem by the Romans in 70 AD and not



Astronomical programs have also confirmed that the Julian date of April 27 in 457 BC was

the the Hebrew date of Iyyar 2. The only requirement for the Artaxerxes 7th year  

command found in Ezra 7:10-26 is that it be in the Jan - June months of 457 BC. The

Hebrew month of Iyyar qualifies.