He OBVIOUSLY measured it in vision.<quoted text>
John was on Patmos as he received this Revelation. How could he have measured the actual temple in Jerusalem?
When the angel measures the city in Revelation 21, how large was the city? Was it a literal city, or was this city symbolic in meaning?
The fact remains that at the time the temple in Jerusalem was still literally in tact.
John was told to measure it because it symbolized that while the literal temple would soon be decimated, spiritually it would not because a new Jerusalem would exist in heaven.
The Revelation prophecy was for the Jews. It followed in a long line of prophecies by God's prophets for the rebellious nation of Israel. Finally that executed the Son of the Living God and that sealed their fate as the generation that would be held solely responsible for all the blood spilled on earth since Abel. I didn't make that up. The Bible says it.
The book of Revelation shouts of a first century fulfillment. You are just not ready to listen. But you will. You won't be given a choice. I hope I'm there when you have to acknowledge this.