Say: “ O Allah! Master of the Kingdom! You give sovereignty to whoever You will and take sovereignty from whoever You will. You exalt whoever You will and abase whoever You will. All good is in Your hands. You have power over all things.” (Surah Al ‘Imran, 3:26)
When you look around, everything that you see has an owner. The chair on which you sit is made up atoms, each one of which was created by Allah. A flower grows by combining such favorable circumstances as sunlight, water, and so on, all of which are granted by Allah. The sea lying beyond your window and all its inhabitants exist only because Allah wills them to exist.
Even your body is under the sway of Allah, Who created you. All of your organs and veins, as well as your nervous system and cells, are works of our Lord's superior wisdom and intelligence. None of the things were desired by you and then brought into existence by you. Once you opened your eyes to this world, you saw both the flawless system in your body and in the universe. However, you did not have any of them before, and you could not have acquired them through your own will in the latter part of your life. This fact surely holds true for all human beings. This being the case, Allah is the Lord and Creator of everything.
Despite this obvious fact, some people disregard all of these and, ignoring Allah's clear existence, assume that they own all of these things. Despite all of our weaknesses, along with their feelings of superiority, they grow arrogant and attempt to deny our Creator. However, this denial only harms them, because as Prophet Musa (as) said: “If you were to be ungrateful, you and everyone on Earth, Allah is Rich Beyond Need, Praiseworthy.” (Surah Ibrahim, 14:8)