Consequently evil of nature can be the object of fear.
 Thomas Aquinas, Summa Theologica (1274). copy citation

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Author Thomas Aquinas
Source Summa Theologica
Topic evil fear
Date 1274
Language English
Reference
Note Translated by Fathers of the English Dominican Province
Weblink http://www.gutenberg.org/cache/epub/17897/pg17897-images.html

Context

“I answer that, As the Philosopher says (Rhet. ii, 5) , fear is caused by the "imagination of a future evil which is either corruptive or painful." Now just as a painful evil is that which is contrary to the will, so a corruptive evil is that which is contrary to nature: and this is the evil of nature. Consequently evil of nature can be the object of fear. But it must be observed that evil of nature sometimes arises from a natural cause; and then it is called evil of nature, not merely from being a privation of the good of nature, but also from being an effect of nature; such are natural death and other like defects.” source