In Revelation 9:6, this signifies to destroy. (Apocalypse Explained 550)

In Revelation 18:14, this signifies to destroy to eternity. (Arcana Coelestia 1160)

4819. 'And his name was Shua' means the essential nature of this. This is clear from the meaning of 'name' as the essential nature, dealt with above in 4817, in this case the essential nature of evil begotten by falsity springing from evil, also dealt with above, in 4818.