Unlike people who refrain from thinking, one who thinks that everything is created by Allah, sees His traces in every detail, and understands that everything is specifically created for mankind.
For example, reflecting on the exquisite systems possessed by living beings, including mankind, and remembering that the planet he lives on and the whole universe has been built by a supreme power, brings the person to a better knowledge of Allah. This softens the heart of the individual, and enhances the respect, love and awe that he feels for Allah. His faith increases, since he sees the signs of Allah’s power and exaltedness in all living things, from trees to birds, to ants, to butterflies, and in every mechanism of their beings. Allah draws attention to the fact that only people who reflect will see and appreciate the evidence of the truth that is all around them:
A person who has certain faith in Allah comprehends that the world is not without a purpose and that there are important things he should reflect on. He knows that everything given to him is what Allah has bestowed on him, for which he gives thanks. He always thinks about the Hereafter and asks for forgiveness in order to be protected from the terror of that day.
The most important point about thinking is surely the fact that it is a gain which everyone makes with his own personal efforts. No one can force another to think. That is why one who thinks thoroughly helps only himself. Allah points out in the Qur’an that only people who reflect will take proper heed of the events they encounter, and that people who pay attention in this way can save their eternal lives. Allah states that some people avoid being reminded, and therefore will end up feeling endless regret: