We Will Disagree, The Horse Is Dead
Matthew & John's account are the same event in Jerusalem, they were both present at the temple with the disciples.
John clearly states he remembered the Lord stating the destruction of the temple, and the interpretation was the destruction in the spiritual, at the resurrection of Jesus Christ.
You sit in the council of the Pharisees, believing it's a literal temple of stone, taking 46 years to build.
The Mystery was (The Temple Of The Lord's Body)
Matthew 24:1-2
1 And Jesus went out, and departed from the temple: and his disciples came to him for to shew him the buildings of the temple.
2 And Jesus said unto them, See ye not all these things? verily I say unto you, There shall not be left here one stone upon another, that shall not be thrown down.
Matthew 26:59-61KJV
59 Now the chief priests, and elders, and all the council, sought false witness against Jesus, to put him to death;
60 But found none: yea, though many false witnesses came, yet found they none. At the last came two false witnesses,
61 And said, This fellow said,
I am able to destroy the temple of God, and to build it in three days.
John 2:19-22KJV
19 Jesus answered and said unto them,
Destroy this temple, and in three days I will raise it up.
20 Then said the Jews, Forty and six years was this temple in building, and wilt thou rear it up in three days?
21
But he spake of the temple of his body.
22 When therefore he was risen from the dead,
his disciples remembered that he had said this unto them; and they believed the scripture, and the word which Jesus had said.