'Sand of the Sea' in the Bible

Isaiah likewise crieth concerning Israel, Though the number of the children of Israel be as the sand of the sea, the remnant only shall be saved.

And I stood on the sand of the sea, and saw a wild beast, coming up out of the sea, having seven heads and ten horns, and upon his horns ten diadems, and upon his heads a name of blasphemy.

And shall go forth to deceive the nations, which 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.