Much like the first, this vision will show him “what must take place after these things.” We are once again about to gain a view into things that must take place in the interim between the coming of Jesus in the flesh and His coming again on the clouds.

Looking into this doorlike opening into the spiritual realm, John heard the same trumpet-like voice he had heard in Revelation 1:10. The voice of the Lord Jesus. He is called to come up to the very throne room of God.