While being the Thirty-Third Letter, this is also the Thirty-Third Word.
In the Name of God, the Merciful, the Compassionate.
We shall show them Our signs in the furthest horizons and in themselves, so that it will become clear to them that this [Qur'an] is indeed the Truth. Is it not enough that your Sustainer witnesses all things?1
Question: We would like a concise explanation of the ways man and the universe, that is, the microcosm and the macrocosm, point to the necessary existence and unity of God and His dominical attributes and functions, which the two parts of the above verse denote. For the unbelievers have gone too far, they are saying: "For how long shall we say: 'And He is powerful over all things,' and have to raise our hands?"
Answer: The thirty-three Words that have been written form thirty-three drops from the ocean of this verse and from the seas of truth which flow from it. If you look at them, you will find your answer. What we say now is only a sort of hint to the sprinkling of a single drop from the ocean.
For example, if a wonder-worker wants to build a splendid palace, he first of all sets the foundations in a wise and regular fashion, and plans them in a way suitable to their future purpose and results. Then he skilfully divides them into sections and apartments. Next, he orders and arranges the apartments, and decorates them with tapestries, then illuminates them with electric lights. Then, in order to renew his ingenious works and favours in that magnificent and adorned palace, he makes fresh creations and new changes and transformations in every level of it. And then he installs a telephone in every apartment connected to his own abode, and opens up a window from each, so that his may be seen.
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1.Qur'an 41:53