I do not see this to be a problem, as in my own perception, evil simply does not exist. Why? God created nature, and God himself is good. As God is wholly good, nature, therefore, must also be good. Human actions are dependent on nature. As humans act dependently on nature, they are acting dependently on a good. Therefore, all must result in a good, even though we, as humans, perceive things as bad, such as earthquakes. All is manifested in nature, therefore all resulting in the goodness of nature.