Please note that I do not mention about the datings and roots where it came from. I will just try to show some valid points.
Sanskrit is special and sacred in many ways. I will try to cite you some examples regarding its speciality. Regarding the sacredness of it, one has to take the words of mahatmas and acharyas as valid, because often scientific explanation may not be possible.
It is the most beautiful, structured and interesting language to learn. The charm of Sanskrit language can be demonstrated using an example. Consider the following sentence
The 'small boy' hit the 'red ball' 'with his bat'
Suppose I form some sentences by just changing the positions of the words.
The small bat hit the red ball with his boy
The small ball hit the red bat with his boy
The red ball hit the small bat with his boy
The red boy hit the small ball with his bat
The meaning is either changed or there is no meaning at all.
If we write the original sentence in sanskrit, it is
लघुः बालकः (small boy) दण्डेन (with his bat) रक्तं कन्दुकं (red ball) प्रहृतवान् ।
let us jumble the words of the above sentence
लघुः बालकः प्रहृतवान् रक्तं कन्दुकं दण्डेन ।
लघुः दण्डेन प्रहृतवान् रक्तं कन्दुकं बालकः ।
लघुः कन्दुकं प्रहृतवान् रक्तं दण्डेन बालकः ।
रक्तं कन्दुकं प्रहृतवान् लघुः दण्डेन बालकः ।
In all the above sentences, the meaning has not changed. लघुः is in prathama vibhakti, बालकः is in prathama vibhakti, so only those two will join but not others. रक्तं is in dvitiya vibhakti, कन्दुकं is in dvitiya vibhakti, and only those two will join. So in this way the meaning is not changed and all the above four sentences are correct. This is the fundamental enabling feature of sanskrit.
So as far as gramatically sentence is not wrong, you can put the words anywhere, they will attach together. That is why sanskrit students are taught padachheda and anvaya (which ones to put together) for a sloka. Because in English the words are words, they donot relate or attach to their subjects or objects.
In Sanskrit, each letter represents one and only one sound. In English, the letter 'a' for example may indicate many sounds (fat, fate, far,etc), but not so in Sanskrit. The alphabet is systematically arranged according to the structure of the mouth. It is essential to use the correct mouth position and not to merely imitate an approximation of the sound.
There are many such specialities. That is why learning Sanskrit is not merely language, but it is the science of sound. One has to experience it and know it.