Answer:
I am a million peopleβs wakeup call
I am easy to waste and unstoppable
I am a portal to another world which you cannot enter. Only you can see me but I can't see you.
I am gentle enough to soothe your skin, light enough to fly in the sky, strong enough to crack rocks. What am I?
I shift around though always slowly. I never move more than a few inches at a time. A large movement by me can kill many people. I am huge yet unseen by humans.
The virgin gave birth to a child and threw away the blanket.