I found an excellent article that explains and proves why Sanskrit is considered to be a divine language. The author starts by describing the qualities required for a language to be treated as sacred, and then dwells into the glorifying details of Sanskrit.

Here are some excerpts from it…

The motivation for learning Sanskrit is the enchantment, inspiration, peace and deep sense of spiritual connection felt when listening to it. Or it may have been a pure childlike enjoyment in duplicating those sounds.

Sanskrit is an enjoyable experience at all stages. Working with Sanskrit increases and develops energy and clarity of mind. There are seemingly an infinite variety of euphonic sound combinations and rhythmic patterns to be enjoyed. Experiencing them expands the capacity of the mind to operate as the cosmic computer it is designed to be.

Learning Sanskrit is an opportunity to know directly for ourselves what the rishis discovered long ago. Most important, when approached as a sacred language, it makes us happy.

It seems that on some level, perhaps unconsciously, a person who has decided to learn Sanskrit, has decided in some way to use this sacred language for that which it was designed — to be free.

I use language to direct my attention to a full appreciation of the beautiful sounds of the Sanskrit language, their harmonies and their organization, as well as the truths expressed through the language.

The words of Sanskrit, through their sound vibration are like waves of pure energy, which we enjoy as if watching a performance taking place inside us — while their meanings describe our own fathomless perfection, as the seer of all, ancient, eternal.

By studying this sacred language only, the soul of India can be understood and a good example among foreigners, we can say, is Max Muller a German Scholar.