Daniel said the eternal Kingdom of God would come in the time of the fourth kingdom, the Roman Empire. To the born again, it came right on time according to scripture. It was the gospel of the kingdom identified through scripture Jesus and the disciples preached. To the Pharisees and blind, the kingdom did not come. Why? Because they could not see it thinking it was a to be a physical kingdom. And this condition remains today. Most blindly look for the same physical millennial kingdom the Pharisees still look for.
But does this blindness result in the great end-time apostasy Paul spoke of? I believe it does. Because a physical kingdom results in a rejection of Christ and his shed blood on the cross. And a return to Judaism and Temple animal sacrifice. This rejects Christ and his blood in a way that cannot be forgiven, according to Hebrews 6.
Also, the temple measurements are not complete. So any attempt to draw pictures of it is sacrilege by adding dimensions to God's word. The fact that only God can build it proves it is symbolic of Jesus and his atonement, being the temple made without hands.