Storms make trees take deeper roots

"It was probably 1am when I heard the doorbell ring. There was a strange feeling inside of me. I couldn't fathom who could have come at that hour of the night.
My first thought was to just pretend I didn't listen anything but then I thought it would be very childish to do so if someone actually needed my help. So I got out of my bed and went down the hall to my front door. I switched on the porch light and peeped into the eyehole. I saw the silhouette of a man in his late twenties maybe wearing what seemed like a suit. I again felt that strange erie feeling. However I decided to open the door. But strangely as I opened it I could not see anyone standing there. It was like as if that man vanished in thin air. I went outside a little bit but still couldn't see anything. I turned back to get inside. But just as I turned I could feel that someone was standing just behind me.... and that's when I heard his voice - deep but husky, with an accent I couldn't quite place - he said ,"Storms make trees take deeper roots........"