First, the idea of stones and trees talking is from the realm of fairy tales. In order for the stone or tree to talk, it would need a brain, lungs, the proper vocal cords, and an understanding of the language it is speaking. Equally disturbing is the claim that one of these trees, the Gharqad, will take sides with the Jews. If the thought of trees and stones talking was not enough, the Qur'an mentions clouds that can speak. Most readers pass right by this verse, but many questions come up when analyzing it.
Fear is an emotion which is caused by chemical impulses in the brain.
Till, when he reached the setting-place of the sun, he found it setting in a muddy spring, and found a people thereabout. Either punish or show them kindness. This is a major scientific blunder in the Qur'an. A man walked until he reached the setting place of the sun, and saw it setting in a muddy spring. Modern science has taught us that the earth revolves around the sun.