The subatomic world explains how Allah is the sovereign and how He is the reality (al Haq), “So exalted is Allah (Above everything in His nature), the Sovereign (of the universe), the Reality (Haq of the universe whose reality is superior to everything else)”.
Just like physics has discovered that space (Matter) and time are connected with each other, matter creates time, when Allah said, He IS the passing of time (Dhuhr), Allah is then associating our reality, which our body creates, with himself to teach us.
Because Allah is the one in control of the universe, there is no deity other than Him to compete with Him on what the laws of the universe should look like, He created the universe according to His fitrah (nature), who He IS. Had other gods existed you would have seen conflicting laws like conflicting opinions, and consequently, nothing would be alive today in such a convoluted universe of laws fighting each other, but everything arose from the fact the universe is in harmony with itself each law relying on another to exist.
Instead of chaos and chance, it was from the calmness of space as the universe cooled down after the initial big bang (explosion) that life came from; “If there had been in them (space and earth) any gods except Allah, they would both (space and earth) have certainly been in a state of disorder (the universe would not function as it should, everything relies on something else in a grand web of interconnectedness, so if one law failed to work or worked against everything else, the things that create life would fall apart, the existence of life requires the existence of harmony); therefore glory be to Allah, the Lord of the dominion (the universe), above what they attribute (associate with His control of the universe through their ignorance of science)” (21:22).
But because the universe functions correctly Allah said; “Exalted is (Allah) who holds all control in His hands (everything that controls the universe, all the laws and forces are in His hand, man looks at the laws and says where is Allah when they move everything, while Allah says all the Laws and forces that move everything are being controlled by Him. He explains how in the Quran when He says He controls the Universe from the Arsh, the deepest sub-atomic layer, exactly as science teaches, everything relies on its building blocks and the Arsh is the “end of the line”); who has power over all things; who created death and life to test you and reveal which of you does best––He is the Mighty, the Forgiving; who created the seven heavens (the seven sub atomic depths), one above the other (from the Arsh to us, “light upon light”, layer upon layer, particle within particle). You will not see any flaw in what the Lord of Mercy creates (we are being asked to look at the sub atomic, to study it in depth). Look again! Can you see any flaw? Look again! And again! (deeper and deeper) Your sight will turn back to you, weak and defeated (by its harmony and depth).” (67:1-4)
This verse explains how Allah controls the universe, we rely on the laws of the universe to exist and they rely on the depths of subatomic space to exist and sub atomic space relies on the Arsh (the boundary protecting the universe from unravelling into nothingness) to exist and Allah established (Istiwa) Himself here controlling all things in the universe;
“VERILY, your Sustainer is Allah, who has created the heavens (subatomic world) and the earth in six periods, and is established on the throne (Arsh) of His almightiness, governing all that exists. There is none that could intercede with Him unless He grants leave therefor. Thus is Allah, your Sustainer (this is how He sustains you, through the subatomic world that He moves everything through, using the Arsh): worship therefore Him: will you not then keep this in mind?” (10:3)
“VERILY, your Sustainer is Allah, who has created the heavens (subatomic world) and the earth in six periods, and is established on the throne of His almightiness (Everything from Him comes from the Arsh, the deepest sub atomic depth). He covers the day with the night in swift pursuit (He is the cause of change in the universe), with the sun and the moon and the stars (All space) subservient to His command (laws): oh, verily, His is all creation and all command (Laws). Blessed is Allah (Tabaruk/Exalted/Hallowed is Allah, this word implies every kind of blessing that life receives comes from the fact Allah is exalted above the universe and is established on the Arsh, which is why the next Quality mentioned is), the Sustainer of all the worlds! (in the universe)” (7:54)
“Clearly does He spell out these ayat (teachings, signs, verses), so that you might be certain in your innermost that you are destined to meet your Sustainer.” (13:2)
To paraphrase Surah al Mulk in our terms (67:1-4); Allah is exalted above the seven heavens (and He is established/Istiwa on the Arsh, which is His centre of control) and from His exaltedness (this location) He controls all things, He created death and life to test us and this test (our reality) is tied with how the universe works (Karma in short). The seven sub atomic depths are created to bring about His will, one layer above the other from the Arsh until we reach our world, what ever happens in the universe its ripples or vibrations pass through all seven layers, we impact sub atomic space (the Prophets tafsir to Surah Luqman) and sub atomic space impacts us (Surah al Shams). We won’t see any flaw in what Allah created no matter how carefully we look into these depths.
Surah al Mulk isn’t asking us to look at outer space as many originally thought, look means study and see if you can find flaws with how the universe is constructed. “You will not see any flaw in what the Lord of Mercy creates. Look again! Can you see any flaw? Look again! And again!” this means subatomic space, Allah is pushing and challenging us to look at the minute details of how things work and are put together.
This passage that began by declaring the exaltedness of Allah explains how understanding space is related to His sovereignty over all things, which is why the surah was called al Mulk, The Dominion (of Allah), all of this is why Allah is the only Lord.