Such a crowd makes one reflect upon Allah's unique vast creation. Since the moment the world came into existence, Allah has created billions of human faces, all different from each other.
There is no time, place or condition necessary for thought. Anyone may think while walking on the street, going to the office, driving a car, working at the computer, attending a friend's gathering or having lunch.
While driving a car, for example, it is possible to see hundreds of people outdoors. He who looks at these people can think about many different things. It may come to his mind that the physical appearances of these hundreds of people are completely different. None of these people look like one another. It is astonishing that, although these people share basically similar features such as eyes, eyebrows, eyelashes, hands, arms, legs, mouths and noses, they all look so different from one another. Thinking a little further, one remembers the following:
Allah has created billions of people over thousands of years all different from one another. This certainly is a piece of evidence of Allah’s obvious existence and marvellous creation.
The person watching all these people rushing may be occupied by many different thoughts. At first glance, each one of these people seems like a distinct individual. Every one of them has his own world, wishes, plans, ways of living, topics that make him happy or unhappy, and tastes. Yet these differences are misleading. In general, every human being is born, grows up, goes to school, looks for a job, works, marries, has children, sends the children to school, marries them off, ages, becomes a grandmother or grandfather and finally passes away. From this point of view, there are no big differences between people's lives. Whether one lives in a neighbourhood in Istanbul or in a Mexican city does not change anything at all. All of these people will definitely die one day. A century later, perhaps not even one of these people will be alive. The person who realises all this, carries on thinking and asks himself the following questions: "Since all of us will die one day, why does everybody act as if they will never depart from this world? While a person, whose death is certain, ought to strive for his life after death, how is it that almost all people behave as if their lives in this world will never end?"
Such a person is one who thinks and reaches a very crucial conclusion from what he thinks.
A great majority of people do not think about these issues. If they are suddenly asked, "What are you thinking at the moment?", it will be seen that they think extremely unnecessary things that will not be of much use to them. However, man is able to think meaningful, wise and important subjects at every moment from the time he wakes up until he sleeps, and derive conclusions from what he thinks.
In the Qur'an, Allah informs us that in all circumstances the believers reflect and derive beneficial conclusions from their thinking.
In the creation of the heavens and the earth and the alternation of night and day, there are signs for people with intelligence: those who remember Allah, standing, sitting and lying on their sides, and reflect on the creation of the heavens and the earth: "Our Lord, You have not created this for nothing. Glory be to You! So safeguard us from the punishment of the Fire." (Surat Al ‘Imran: 190-191)
As we are also informed in the verse, because believers are people who reflect, they are able to see the miraculous side of the creation and exalt the power, knowledge and wisdom of Allah.