Flatland: A Romance of Many Dimensions is a satirical novella by the English schoolmaster Edwin A. Abbott, first published in 1884 by Seeley & Co. of London. My memory of this book is rather hazy, having read it aeons ago. But the idea I'm trying to put forward uses Flatland as a metaphor.
Flatland is a 2-dimensional world where all the inhabitants are 2-D beings - triangles, squares, polygons, circles. Their whole culture and life revolve around 2 dimensions, and they have no concept of a 3-D world, and consequently no vocabulary to describe it. Because they are 2-D beings, they can only create 2-D or 1-D objects in this world.
One day Flatland was visited by a 3-D being - a sphere, who sought to explain what a 3-D world is like to the 2-D person. Is the language of the 2-D world sufficient to fully describe the 3-D world? Does the 3-D communiqué introduce new concepts that cannot be described in the 2-D language? Or does trying to describe a 3-D world in 2-D language collapse and reduce the 3 dimensions to 2?
We are in a 3-D world. We can only create 3-D objects and 2-D objects, and our general concepts and vocabulary is limited to 3-D. We did not even know there was a 4th or 5th dimension until recently, having been able to observe nature with any acuity for the last 500 years or so.
All the dimensions are created, we all believe, by God. It stands to reason that God's existence is at least the same number of dimensions He created. That is, at least N dimensions, or N+x dimensions, with N and x being unknown.
So it is with the Qur'an. It has come to us with descriptions, context and explanations within itself, for us to understand it. It defines words within itself, albeit in our vocabulary, so we can understand. But we cannot use 3-D meanings to understand it, as it will collapse however many dimensions inherent in the Qur'an into our limited 3-D vocabulary.
The shadows cast on the wall represent 2-D translations (circle and square) of a 3-D object which is a cylindrical tube
In the image above, the circle and square represent translated understanding of a 3-dimensional object flattened onto a 2-dimensional vocabulary. Similarly, an N-dimensional book such as the Qur’an is flattened when viewed through 3-D renderings such as man-made interpretations. The only way to really understand properly it is on its own terms and definitions, letting God explain it to you in His words.
Read it and ponder, the Qur'an says, and references itself for clarity and explanations.
Apply 3-D thinking to try and understand it, and we will fall short - and every N-D (spiritual) concept can only be translated as 3-D (physical).