Question

EXPLAIN...........
Scatter, as from an unexitinguished hearth Ashes and sharks, my words among mankind!
Be through my lips to unwakened eath
The Trumpet of a prophecy.

Answer 1

Shelley expresses his hope that his poetry will affect social and/or personal change in the future.

The lyre is a reference to the Eolian lyre which plays rising and falling chords when affected by the wind. If he, the poet, is the lyre, then the West Wind will play/carry his poetry to new places and times.