The statement above is far removed from your opening post. The issue under discussion is NOT the above statement. The issue we are considering is whether Jerusalem was destroyed in 607 BC, as the WTB&TS asserts. Please try to keep your eye on the ball.
No, it is not. Facts about the Bible give reason to hold it in higher esteem when coming to conclusions about the related history.
Insight on the Scriptures pp. 448-450 Chronology
The Bible, by contrast, gives an unusually coherent and detailed history stretching through some 4,000 years, for not only does it record events with remarkable continuity from man’s beginning down to the time of Nehemiah’s governorship in the fifth century B.C.E. but also it may be considered as providing a basic coverage of the period between Nehemiah and the time of Jesus and his apostles by means of Daniel’s prophecy (history written in advance) at Daniel chapter 11. The Bible presents a graphic and true-to-life account of the nation of Israel from its birth onward, portraying with candor its strength and its weaknesses, its successes and its failures, its right worship and its false worship, its blessings and its adverse judgments and calamities. While this honesty alone does not ensure accurate chronology, it does give sound basis for confidence in the integrity of the Biblical writers and their sincere concern for recording truth.
So? This has no bearing on the real topic here - mainly, whether or not Jerusalem was destroyed in 607 BC.
The “seven times,” in Daniel 4:25 which Jesus called “the appointed times of the nations” from 607 B.C.E. along with a multitude of other scriptures point to the 20th century for the restoration of Jehovah's visible organization.
If you are referring to the business documents as "fragments", then your statment is false. They don't conflict with Biblical chronology concerning the fall of Jerusalem. If by "fragments" you mean the astronomical diaries, then your statement is false. These, also, do not conflict with Biblical concerning the fall of Jerusalem. All these fragments DO conflict with the WT's version of history. This, however, is the WT's problem. And your problem.
You can call it strictly a matter of Watchtower interpretation if you choose, but after Carl Jonson's interpretation a person is left completely clueless as to when Jehovah will intervene and act on behalf of human society.
The Bible provides a great "big picture" at Jeremiah 25:11. Unfortunately, for the WTB&TS' interpretation to be correct, we would all have to ignore grammar. This is one of the principle points in "The Gentile Times Reconsidered". Please read it! It shows how all of the scriptures involved, if read grammatically and in context, agree with the historical sources 100% of the time; and how all of the scriptures involved agree with the WT's version of history 0% of the time.
And all this land must become a devastated place, an object of astonishment, and these nations will have to serve the king of Babylon seventy years.”’ Jeremiah 25:11
The reason “these nations” was used in Jeremiah 25:11 is because the nation of Israel divided in 997 B.C.E. The Northern Kingdom was taken by Assyria and the Southern Kingdom by Babylon. Although Nebuchadnezzar held supreme rulership during Jerusalem's destruction, not every nation and surrounding region could have become a devastated place and taken into captivity. The context clearly indicates the prophecy was primarily against the tribe of Judah:
“From the thirteenth year of Josiah the son of A′mon, the king of Judah, and down to this day, these twenty-three years the word of Jehovah has occurred to me, and I kept speaking to you people, rising up early and speaking, but you did not listen. Jeremiah 25:3