Question

Dont necessarily need the question answered, just need to understand how to read this

Which theme from Macbeth do these lines support?

This supernatural soliciting
Cannot be ill, cannot be good. If ill,
Why hath it given me earnest of success,
Commencing in a truth?

Those without convictions are easily manipulated.

Darkness is dangerous.

Ambition unchecked can lead to corruption.

Things are not always what they seem.