Question

please give an example of symbolism in William Blake's "To the Evening Star"


To The Evening Star by William Blake

Thou fair-hair'd angel of the evening,
Now, whilst the sun rests on the mountains, light
The bright torch of love; thy radiant crown
Put on, and smile upon our evening bed!
Smile on our loves, and while thou drawest the
Blue curtains of the sky, scatter thy silver dew
On every flower that shuts its sweet eyes
In timely sleep. Let thy west wind sleep on
The lake; speak silence with thy glimmering eyes,