is this correct usage of verb "be"?

Question

Can I use this line in a song, addressing the fires and the winds:

You fires and winds, please, let the forests be

for them not to get angry anymore and let the forests exist and not destroy them anymore?

Thanks.

Answer 1

The expression let someone/something be generally means stop interfering, though most people would accept its usage in this context.

Answer 2

You have it right. It means to leave the thing alone, as in the "to exist" sense of the verb "to be". Example: "Let it be." (song by the Beatles)