The start point and the finish point are the 2 most important dates. Here is a brief explanation of how Bible historians arrive at them, and where I have made a small refinement, to arrive at the true count of the Sabbatical years as shown on the video.
How we date Israel’s exodus from Egypt.
Over the last century archaeologists have unearthed Assyrian records of kings Ahab and Jehu. (Ahab died in 853 BC) Biblicists have been able to tie the Hebrew records with those of Assyria, Babylon and Tyre and they all agree with each other. Then by tracing the reigns in the books of Kings and Chronicles backwards to Solomon, we reach the key chronological verse.
“In the four hundred and eightieth year after the people of Israel came out of the land of Egypt, in the fourth year of Solomon's reign over Israel, in the month of Ziv, which is the second month, he began to build the house of the LORD.” (1 Kings 6:1)
Tracing the above figure from the 4th year of Solomon, most Bible chronologists have dated the Exodus as 1446 BC. But now we get to my date of
1444 BC, two years later. My refinement is based on a small error in the reign of Omri (Ahabs father) and another in the reign of Solomon. For those interested in this technicality, Ive got some more info.
How we date the start of Christ’s ministry.
The key chronological verse in this case is John 2:20. It was the occasion when Jesus claimed he would rebuild the temple within three days, to which the Jews replied,
"It has taken forty-six years to build this temple, and will you raise it up in three days?" (John 2:20)
This information enables a precision dating of Christ's first ministry year because Herod began construction of the temple in BC 20 and records of his reign are reliable. When we add forty-six years to 20 BC it equals
AD 27.
Now, it’s no coincidence that from 1444 BC to 27 AD is exactly
1470 years. Divide that by 49 and we get
30 Jubilees. Divide it by 7 and we get
210 weeks. Divide again by 3 and we get 3 separate eras of
70 weeks. This has major implications for prophecy buffs. It has even bigger implications for anyone who doesn’t believe Jesus is the Son of God!