'Sand of the Sea' in the Bible

And I stood upon the sand of the sea; and I saw a beast rising out of the sea, having ten horns and seven heads, and upon its horns ten diadems, and upon its heads names of blasphemy.

and shall go out to deceive the nations which are in the four corners of the earth, Gog and Magog, to gather them together to the war, whose number is as the sand of the sea.