In this book we gave some examples and explained that there are many processes taking place in our bodies while we are completely unaware of them. Every organ and every cell of our bodies run with an incredible speed and function perfectly at the same time. All perform the tasks that they are appointed to in harmony. Blood keeps conveying to cells the nourishment that they need to live. The stomach and intestines break down this nourishment into pieces and make it suitable for use by cells. Nerve cells keep sending stimuli to all parts of the body; the brain evaluates these stimuli, as a result of which we see, hear, taste and perceive all other senses.
When one of these tasks is delayed or not performed, the regular order of the bodily functions deteriorates. If nerve cells become impaired, our limbs will not work; if stomach cells become impaired, we cannot digest the food we eat; if the cells in the tongue become impaired, we cannot taste the chocolate cakes, oranges, bananas or cookies we eat. However, except in the case of certain diseases, none of the above happens. Every component of your body keeps performing its regular functions non-stop while you are living your everyday life. The perfection that you are blessed with at every instant of your life surely has a cause. Nothing can originate on its own to have such a complete and faultless mechanism.
Your television, refrigerator, computer, the pens you use while writing, briefly everything has a designer and a producer. A car or a plane cannot come into being on its own. Their operation is enabled by engineers and technicians who designed and produced them. This being the case, it is simply not possible for such a perfect entirety of systems as the human body to come into existence by chance.
You must be wondering how it is that some people think that their bodies function so perfectly as a result of mere coincidences. This is indeed the most unreasonable claim that could ever be put forward. The excellent order in the human body could not have come into existence by chance. This excellent order proves that it is designed by a Being with supreme intelligence and wisdom. It is the creation of a supreme Creator, our Lord.
Allah informs us in the Qur'an that He is All-Compassionate to His servants. What we should do is be submissive to Him, obey His commands completely and give thanks to Him for all the beauties He has given to us. In a Qur'anic verse, Allah addresses us as follows:
That is Allah, your Lord. There is no god but Him, the Creator of everything. So worship Him. He is responsible for everything. (Surat al-An‘am: 102)
They said, "Glory be to You! We have no knowledge except what You have taught us. You are the All-Knowing, the All-Wise." (Qur'an, 2:32)