The Abomination of Desolation

Both scriptures are clear but non of them is speaking of a literal building regardless of what the listeners thought.

John 2:
18The Jews then responded to him, “What sign can you show us to prove your authority to do all this?”

19Jesus answered them, “Destroy this temple, and I will raise it again in three days.”

20They replied, “It has taken forty-six years to build this temple, and you are going to raise it in three days?”21But the temple he had spoken of was his body. 22After he was raised from the dead, his disciples recalled what he had said. Then they believed the scripture and the words that Jesus had spoken.

Yes, a spiritual temple; not a stone building.

The Lord responded by pointing out not just the temple but other magnificent structures surrounding it whose stones would all not sit one atop another.
Mark 13:2 And Jesus answering said unto him, Seest thou these great buildings? there shall not be left one stone upon another, that shall not be thrown down.

So he was mistaken, because one wall is standing? If its true what Jews say about the wall.

He could not speak about some distant future, because their Jerusalem does not exist anymore. Jerusalem of today was built by Romans much later and apostles could not see "its buildings".

Why to complicate things?

I've heard this argument before that the Romans built that wall after 70 AD.
There is no way to prove that they did or didn't, so I guess we'll just have to wait to see if any abomination that causeth desolation throughout the Middle East as described in Daniel, Amos, Isaiah, Revelation, and other books in the bible materializes.

The Lord was not mistaken. As I have pointed out in my posts there are numerous other scriptures that indicate a future destruction to the land of Israel.

Their Jerusalem they saw and walked in was destroyed in 70 AD.

Today's Jerusalem was rebuilt later. Its not what apostles and Christ saw and talked about. Does not make sense. There are no "great buildings" from their times to be destroyed.

The western wall isnt actually part of the original temple. Its just the remains of a roman fortress.

And the connection of the western wall to the temple of God is very dubious, at best.

Most people believe it was an enlargement of the Temple Mount, built by the king Herod, who was a murderer (even of his own family) and was not even a Jew. He was not called by God to build anything related to the temple. He built it for his own glorification.

Some theories say its a remaining of a Roman fortress - the Fort Antonia, which means it has nothing to do with religious activity at all.

Yeah, you were few seconds faster than me ;-)

If the current Wailing wall is as believed by many to be a foundation wall to the temple, it would then be a structure that was standing when the Lord said not one stone would stand atop another. As such, and the 70 AD destruction of Jerusalem was what the Lord was referring to when He said not one stone would sit atop another, He would then have been wrong. If, however, the 70 AD destruction of Jerusalem was not what the Lord was referring to when He said not one stone would sit atop another, but instead was referring to another time and event forthcoming, then the Lord would not be wrong.
As I have shown in other scriptures from Isaiah 28:18-20 and Amos 6, there appears to be another time in which Aerial sorties will be taking a daily sacrifice of human lives throughout the land of Israel. It is then no stretch of the imagination where daily aerial sorties over Jerusalem could easily level every structure.
The remnant survivors who are left in Jerusalem will then speak out from under the leveled ground...(Isaiah 29:4).

Isaiah 29:4 And thou shalt be brought down, and shalt speak out of the ground, and thy speech shall be low out of the dust, and thy voice shall be, as of one that hath a familiar spirit, out of the ground, and thy speech shall whisper out of the dust.

What do you even mean by "foundation wall"?

Nobody believes its a part of the temple, not even Jews. Their most "temple-like" theory is that its a wall built by Herod around the original temple. How can you call it "foundation"?

So Jews pray at its base, because they do not believe it to represent part of the old temple?
That doesn't make much sense.

This conversation is coming full circle back to whether or not the current Wailing wall was there when the Lord spoke that not one stone would sit atop another.
Like I previously posted, there appear to be numerous other scriptures indicating a forthcoming destruction by the abomination that maketh desolate undertaking numerous aerial sorties over the land of Israel that will take a daily sacrifice of lives.

Judaism does not make much sense.

They lost the city, they lost against Romans, they have no temple, they were even cast out of the land. They have no prophets, no Messiah, God is not talking to them.

Therefore they invented "rabbinical judaism", but its a fake religion.

The abomination which causes desolation does not mean the destruction of anything, it is a OT term which refers to an idol being placed or sacrificed inside the most holy place.

We need to seperate the destruction of the temple. From the desolation or desecration of the most holy place in an existing temple.

All this is true, but temporary.

Before the end there will be many of them getting saved.

Why do you think so?