AnnOMaly,
I will try to address as much of what issues you raised as I can. And I want to be on record to say that you are bringing up good debate points.
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Going back to:
Ezekiel identifies the date ( if we assume Jerusalem's fall in 586) as the same year as Jerusalem's fall. If this is indeed a reference to the king of Tyre in Ez 28:3 - "So you are as wise as Daniel/Danel; no sage as wise as you." - this would be very early in Daniel's career.
And considering it was Nebuchadnezzar that was laying siege to Tyre, it sounds a little implausible at that. But according to the text of Daniel, this was a period in which Nebuchadnezzar was off track for 7 years, having gone mad.
And you note:
If Daniel, not 'very' early in his career. He would have clocked up about 20 years' experience by then, and in a prestigious, official capacity too (2:48).
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Regarding dates we have a double system of book-keeping. The translator of Annals of the Chaldean Kings concedes evidence for a raid on Jerusalem that carried off hostages circa 603 BC, but his chronology has its ultimate destruction in 586. If you are saying that Daniel should be presumed to have a 20-year career with Nebuchnezzar as a sage, let us remember that the Tyre siege and Jerusalem's destruction occurred about the same time. IF Daniel were hauled into Babylon earlier than that (603), he arrived as hardly even an adolescent. According to chapter one, his first sage accomplishment was a 10-day diet plan that made him look healthy to the chief eunuch. Maybe in 586 he was about 33. If he came in later (597 or 586), he was much younger.
Tyre, held by the way. It was Alexander that actually delivered on Ezekiel's prophetic threats.
Now is there any mention of Daniel or Beltazzar in Babylonian or Persian cuneiform records? They certainly mention a lot of other individuals.
Prophecies are indeed murky waters. Over the decades I had not been tracking those of the JW, but I was aware of other people's notions of the layout of history. Even had a weird deju vu dream or two myself. But I would still have to say that the guys that get the best score on these tests seem to be surrounded with suspicions of falsified postmarks on their letters. Occam's Razor.
And, of course, there are other religious traditions that have prophecies of their own. Perhaps we could swap tales with discussions about Catholicism's own apocalyptic tradition - "Our Lady of Fatima". JWs can describe what their expectations from God were for the late 20th century and I can relate the tradition and the outcome of the other. Of the two I like the Fatima version better. There was a dilemma on Earth, presented at about time Russell and Rutherford presented theirs; but there was also eventual divine mercy and the faithful participated in the solution through prayer. It does not bring us to the end, but it wasn't a morbid apocalypse either. Even had a hero or two. But that's not the only tradition on the block.
The issue of translating Danel vs. Daniel illustrates another aspect of dealing with the uncertainties of translation. In the case I have presented, it becomes clear ( at least to me) that the NJB translators were not simply confronted with three consonants and no vowels from an ancient text, but deciding on what the vowels ought to be based on other documents they had access to. Admittedly not all of us reading these words will agree on their choices, but I suspect that it can be understood how evidence in Maccabees and Ecclesiasticus and world view would influence their choice. Their perspective is also based on hierarchies of evidence. These include classifying Biblical sources into Gospel, Epistle, Acts, Revelations, and Old Testament categories as well.
Let's take a different perspective. A 19th century Anglo American perspective is that Scripture is inerrant and does not contradict itself. Yet at the same time to explain the state of the world, consideration of organizational church abuses over centuries engendered a doctrine of a widespread millenium long apostasy that assured reformers they had God's guidance and that they would be his logical intermediaries when his Son returned. In this line of reasoning dreams recorded in apocalyptic books, whether initially intended or not, tended to have a trump effect over Gospels. If you would like an example, consider the NWT of Jesus speaking with the Good Thief in Luke 23:42-43 "And he went on to say:"Jesus, remember me when you get into your kingdoms". And he said to him: "Truly I tell you today, You will be with me in Paradise."
It is in behalf of doctrines derived from dreams in Daniel about 2520 year intervals that just have to limit the ability of the Son of God to deliver on this promise. Apocalyptic literature has trumped over the Gospel in a translation decision. The result is that (as far as I understand this) to Watchtower readers the Good Thief is still waiting for what Christians elsewhere interpreted as an immediate entry. Otherwise, I don't think there would have been significant numbers of Christians around in 1914, if the original followers and adherents had understood the words in 30 AD the way the NWT has them interpreted today.