'Sand of the Sea' in the Bible

And Isaiah exclaims, with regard to Israel, Though the number of the sons of Israel be like the sand of the sea, only a remnant of them shall be saved;

Then I stood on the sand of the sea, and I saw a Beast rising out of the sea with ten horns and seven heads, ten diadems on his horns, and blasphemous titles on his heads.

and he will emerge to seduce the nations at the four corners of the earth, even Gog and Magog, mustering them for the fray. Their number was like the sand of the sea,