"Buff - I have already shown that God divorced the Northern Kingdom, not the Southern one (Judah)."
Dave, my brother, this is completely off-center.
No, Dave's right. The Old Testament devotes a lot of space to making separate prophecies with regards to the northern and southern kingdoms. To briefly summarize...
The southern kingdom was chastened by God for its apostasy by being sent into captivity, in the 6th century BC. A portion of the populace was deported to Babylon, and then a fraction of that portion was further removed to Persia when Babylon was conquered. The prophets say that their captivity will end and they will return and rebuild Jerusalem. The Old Testament also records the fulfillment of these prophesies in Ezra and Nehemiah.
The northern kingdom was judged by God for its apostasy in the 8th century BC. God brought the Assyrian army against them, and destroyed their kingdom. This is the kingdom which God said he divorced. The prophets call the Northern Kingdom "not a people" and "dry bones" but predict that it will be resurrected and made to live again. The Old Testament does NOT record the fulfillment of these prophecies. They were fulfilled, starting in the intertestamental period and extending into New Testament times. Proselytes were baptized to become members of those tribes, causing a literal resurrection of the northern kingdom, in its historic lands.
When Jesus foretold the destruction of Israel and Jerusalem, He did not make a distinction between Northern and Southern Israel. Additionally, when He sat upon the Mount of Olives, overlooking Jerusalem, and expressing a deep sorrow for them, He made zero differentiation.
In both instances, He alluded to the whole of Israel, not just one section of her. And that is precisely what occurred in A. D. 67-70.
Throughout Scripture, Jerusalem is synonymous with the southern kingdom - that is, Judah. That the Lord sat overlooking Jerusalem points to a judgment of that group, specifically.
As for His words about the northern kingdom, I will quote:
Matthew 10:6 But go rather to the lost sheep of the house of Israel.
Matthew 15:24 But he answered and said, I am not sent but unto the lost sheep of the house of Israel.
John 10:16 And other sheep I have, which are not of this fold: them also I must bring, and they shall hear my voice; and there shall be one fold, and one shepherd.
It is clear that part of the Lord's mission upon this earth was to enact the resurrection of that old northern kingdom of Israel, through the making and baptizing of proselytes into it. Further, He put out the call to the southern kingdom to join it together into a single kingdom. A large part of them responded, and were baptized into a re-united Israel. Another part did not respond to the call, and these were the ones who went into perdition - the branches who were "broken off."
Historically, we can see that the followers of Jesus heeded His warnings, and fled from Jerusalem when they saw the signs, avoiding the judgment that came in the form of the Roman army. In the north as well, they refused to join the zealot uprisings, and largely escaped unscathed in the Roman decimations that occurred there.