'Sand of the Sea' in the Bible

But Isaiah crieth concerning Israel, "Though the number of the sons of Israel be as the sand of the sea, a remnant shall be saved:

AND I stood upon the sand of the sea, and I saw a beast rising up out of the sea, having seven heads and ten horns, and upon the horns ten diadems, and upon the heads a title of blasphemy.

and he shall go forth to deceive the nations that are in the four corners of the earth, Gog, and Magog, to gather them together to battle, whose number is as the sand of the sea.