When the seventh trumpet was blown, John once again saw heaven and God’s throne.
In Revelation 4:8, the four living creatures worshipped God. They worshipped by saying that God was, and he is, and he will come.
In Revelation 11:17, the elders worshipped God as the one who is and who was. This showed that God had already come. Jesus the Messiah had already come to earth to rule completely.
John was a witness to how this was celebrated in heaven. The temple was opened and the ark of the covenant could be seen. This meant that creation was no longer separated from God. God’s kingdom in heaven had been made one with his rule on earth.
Next John would be shown how God would destroy those who destroy the earth. These were all who refused to accept God’s rule on earth.