The Great Tribulation is not the same as trials and tribulations that Jesus said we would suffer through.
That's true, however the tribulation period in Matthew 24 and Mark 13 is clearly spelled out.
Matt 24:21; "
For then there will be a great tribulation, such as has not occurred since the beginning of the world until now, nor ever will.
Matt 24:22; "Unless those days had been cut short, no life would have been saved; but for the sake of the elect those days will be cut short.
Mark 13:19;
"For those days will be a time of tribulation such as has not occurred since the beginning of the creation which God created until now, and never will.
Mark 13:20; "Unless the Lord had shortened those days, no life would have been saved; but for the sake of the elect, whom He chose, He shortened the days.
..."a great tribulation, such as has not occurred since the beginning of the world until now"...
What great tribulation could be greater than "the" great tribulation? It certainly wasn't the fall of Jerusalem in 70ad. That lasted six months at most, and affected roughly 50,000 people in one single city with an estimated population of about 200,000.
Hitler killed over 7 million Jews over a period of about 5 years. Hitler would have been much closer to the great tribulation than the siege of Jerusalem in 70ad. In fact, the estimated military deaths alone from World War II are between 20 and 25 million.
A lot of people think it was Nero who was Emperor when Jerusalem was destroyed, but no Nero had already died two years before.
...."but for the sake of the elect those days will be cut short"....
Why are elect still here? If it was a pre-trib rapture, wouldn't the elect already be gone?
Also, if the Bible says the tribulation will be two periods of roughly 42 months, or 1,260 days, or a times time and half a time, and the abomination of desolation will last 1,290 days ( Dan 12:11; ) this is about 7 years give or take a few days.
The siege of Jerusalem wasn't even 7 months, much less seven years. The abomination of desolation couldn't have been performed during this time, because the temple wasn't even standing for 1,290 days ( 3 1/2 years ).
Jesus said "every" stone would be overturns ( Matt 24:2; ) this is controversial, because depending on which web site you visit ( it's about 50% / 50% ) the wailing wall was part of the temple. Other's say the wailing wall wasn't part of the temple.
But if it was part of the temple, then either Jesus was wrong about "every" stone being overturned, or else it hasn't happened yet.