These are prophecies that apply not only to that age for their initial fulfilment, but to the age of Christ, the age of the Christian Church, for further fulfilment, and of course to the return of Christ for their ultimate fulfilment. These prophecies are to be fulfilled a first, second, and third time.
God will find a way of doing it. The same kind of thing happened with the release of the captives 70 years down the line. With the coming of Christ, there was John the Baptist, given no miracles, nothing spectacular, but such an amazing hearing and voice and attention that this wild man from the wilderness was the one who went before Christ and was able to sound through the whole of Judah that Messiah had come, the Lamb of God was here. It is the same when there is any restoration or awakening and revival. There is some mighty significant voice possibly very lonely or accompanied by very few helpers and fellow proclaimers. But this is the first stage, God moves. The return from Babylon is 70 years ahead at this stage, but God is moving and the message goes forth.
In 2 Kings 24, where we read a little more about this. ‘And Nebuchadnezzar king of Babylon came against the city, and his servants did besiege it’ (2 Kings 24:11). This is 597 BC. ‘And Jehoiachin the king of Judah went out to the king of Babylon, he, and his mother, and his servants, and his princes, and his officers: and the king of Babylon took him in the eighth year of his reign. 13 And he carried out thence all the treasures of the house of the LORD, and the treasures of the king's house, and cut in pieces all the vessels of gold which Solomon king of Israel had made in the temple of the LORD, as the LORD had said. 14 And he carried away all Jerusalem’ – all who were not killed; not literally all, many were left behind, but it means a great number. ‘And all the princes, and all the mighty men of valour, even ten thousand captives, and all the craftsmen and smiths’ – in other words, he left them without fighting soldiers, and without the means of making weapons. ‘None remained, save the poorest sort of the people of the land. 15 And he carried away Jehoiachin to Babylon, and the king's mother, and the king's wives, and his officers, and the mighty of the land, those carried he into captivity from Jerusalem to Babylon. 16 And all the men of might, even seven thousand, and craftsmen and smiths a thousand, all that were strong and apt for war, even them the king of Babylon brought captive to Babylon. 17 And the king of Babylon made Mattaniah his father's brother king in his stead, and changed his name to Zedekiah.’ So Jerusalem and Judah got a puppet king to rule over the remnant of lower-class people who were left. Zedekiah, in due time, turned against Babylon, and that is when Jerusalem was finally attacked and fell. Verse 18: ‘Zedekiah was twenty and one years old when he began to reign, and he reigned eleven years in Jerusalem. And his mother's name was Hamutal, the daughter of Jeremiah of Libnah. 19 And he did that which was evil in the sight of the LORD, according to all that Jehoiakim had done. 20 For through the anger of the LORD it came to pass in Jerusalem and Judah, until he had cast them out from his presence, that Zedekiah rebelled against the king of Babylon.’ So those that lived and survived were now in Babylon, and Jeremiah writes to them. And that's the first stage, the first event that precedes any spiritual restoration. The word of God goes forth.