THEY BELEIVE THE DESOLATION LASTED 70 YEARS NOT 50 YEARS.
This is what they make up from thin air, that the desolation lasted 70 years. They believe it, but the Bible doesn't teach it. The 70 years started in 2 Chronicles 36:6 and ended in 2 Chronicles 36:21. I know this for sure because Ezra recorded that it was in fulfillment of what JEREMIAH wrote. Jeremiah only spoke of 70 years applying to the nations (including, but not limited to, Judea) becoming subject to Babylon for 70 years. Jeremiah never said the temple would be destroyed for 70 years, in fact, he said there was no need for the city or people to be brought to ruin.
2 Chronicles 36:21 refers to the state (he. shammâ: appallment, horror, waste) of the land, not the condition of the people and certainly not the state of the Temple or the rulership of a line of kings.
(NWT) 2 Chronicles 36:21 says:
to fulfill Jehovah’s word by the mouth of Jeremiah, until the land had paid off its sabbaths. All the days of lying desolated it kept sabbath, to fulfill seventy years.
(NWT) marginal reference on "seventy years" points to Jeremiah 25:12, which says:
“‘And it must occur that when seventy years have been fulfilled I shall call to account against the king of Babylon and against that nation,’ is the utterance of Jehovah, ‘their error, even against the land of the Chal·de´ans, and I will make it desolate wastes to time indefinite.'"
If this prophecy relates to 607 BC as a starting point then the seventy years were fulfilled in only sixty-eight. Babylon was called to account in 539 BC, not 537 BC. Even according to your Governing Body. I do hope you wake up to what they did to your brain. I am genuinely concerned for whether you will find your way clear of their poisonous thinking.