Allah, there is no deity but Him, the Living, the Self-Sustaining. (Surah Al ‘Imran, 3:2)
Some people believe that Allah created the universe's flawless system and then left it to its own devices. Though not often expressed, people harbor this mistaken belief in their subconscious. Those who do not want to acknowledge their responsibility to Allah and do not perform the deeds that He demands from them believe that this belief provides a way to escape their responsibilities.
However, there are such causes and laws adorned with delicate details underlying all of existence that, such complex systems cannot proceed without a superior power supervising them. People who can hear, see, and deduce from these experiences recognize this fact immediately. Indeed, Allah relates that He is the One Who holds the heavens, Earth, and everything in between, as follows:
Allah keeps a firm hold on the heavens and Earth, preventing them from vanishing. And if they vanished, no one could then keep hold of them. Certainly He is Lenient, Ever-Forgiving. (Surah Fatir, 35:41)
As this verse states, Allah created the universe and keeps a firm hold on it. Life exists only because He holds sway over it. This is also true for the stability of the universe's extraordinarily intricate balances and the existence of the subtleties inherent in those systems. The Qur'an relates these facts, as follows:
Allah, there is no deity but Him, the Living, the Self-Sustaining. He is not subject to drowsiness or sleep. Everything in the heavens and Earth belongs to Him. Who can intercede with Him except by His permission? He knows what is before them and what is behind them, but they cannot grasp any of His knowledge save what He wills. His Footstool encompasses the heavens and Earth, and their preservation does not tire Him. He is the Most High, the Magnificent. (Surat al-Baqara, 2:255)
Faces will be humbled to the Living, the All-Sustaining. And anyone weighed down with wrongdoing will have failed. (Surah Ta Ha, 20:111)