Have you ever paid attention to the size of everything?
All the events and materials in the universe and the laws governing them are in a correct amount and size. For example, if the speed of light were faster, we would all burn up due to the intense heat of the sun. If the distances were false and closer, according to the Theory of Relativity, the world would become denser and it would be impossible for life to exist. If the speed of light were slower, we would freeze, nothing would be seen as it is, objects would appear to be elastic in motion, and the colors of objects would not be natural and constant. If there were less water, the earth would be getting hotter constantly and life would not have formed. If the gravity of the earth were more or less, there would still be fundamental problems facing the formation and continuation of life, and many other things that scientists are now working to discover.
But fourteen hundred years ago, none of these things were discovered. God says that:
Al-Qamar
إِنَّا كُلَّ شَيۡءٍ خَلَقۡنَٰهُ بِقَدَرٖ(49)
We have surely created everything in a determined measure.​​​​​​​