I don’t understand this question. Why do we have the ability to be inspired? We have it because that’s the word we apply to the behavior. Perhaps it was bred into us through evolutionary processes. Inspiration results in new ideas. We need it, or else we’d never have become human. Inspiration is essential in the process of creating new things, although usually the term is applied after the fact.
Then you ask why you are given this power. It’s not clear exactly which power you are given. The power to be inspired? The power to create silence? Since I don’t know which power you are talking about, I can’t hazard a guess as to where it comes from, although I seriously doubt it is a power anyone gives you. I suspect it’s something you are born with. Something innate. Something you can choose to use—or not.