Answer: The cherubin were angels, and in Macbeth's simile the couriers were not blind but invisible horses evidently coming to exact revenge for the murder. The word "horsed" shows that the "sightless couriers" are invisible horses.
Explanation:
At some particular space it's all dark but when you almost at a stop you see the light and the design that the put on the wall ,so much noises at the stop
Aida is the answer to which opera was written to celebrate the opening of the suez canal