Throne of david
'The throne of David,' as in Isaiah 9:7, Luke 1:32, and Jeremiah 13:13, signifies the Lord's royalty in His spiritual kingdom. (Arcana Coelestia 5313[4], Apocalypse Explained 946)
Revelation 8:2
2
I saw the seven angels who stand before God, and seven trumpets were given to them.