'Sand of the Sea' in the Bible

And Esaias cries for Israel, If the number of the sons of Israel as the sand of the sea, the remnant shall be saved:

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

And he shall go forth to deceive the nations that in the four corners of the earth, Gog and Magog, to gather them together for war: whose number as the sand of the sea.