“And Jesus went out, and departed from the temple: and his disciples came to him for to shew him the buildings of the temple. 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 24:1,2
Jesus is speaking of the buildings of the temple that were brought down in 70AD, exposing the foundation. But he is also speaking of the destruction of the doctrines of the church, whose foundation of false teachings is being exposed in what is the 7th day.