A prophet always appears in the shape of an ordinary man. So, man is not able to recognise him. Similarly, the she-camel sent by God was also apparently like an ordinary camel. So, the people of Thamud were unable to recognise it and killed it. Our world presents just this kind of test. Here, people are required to see the representative of God in the apparently ordinary person and the she-camel of God in the apparently ordinary she-camel. Those who fail in this test never find the path of righteousness. Though the Quran is a deeply meaningful book, there is the utmost clarity in its style of expression. For this reason it has become very easy to understand the Quran, whether its readers be of greater or lesser education.