'Sand' in the Bible

And everyone to whom my words come and who does them not, will be like a foolish man who made his house on sand;

And when it was day, they had no knowledge of the land, but they saw an inlet of the sea with a floor of sand, and they had the idea of driving the ship up on to it if possible.

And coming to a point between two seas, they got the ship to land; and the front part was fixed in the sand and not able to be moved, but the back part was broken by the force of the waves.

And Isaiah says about Israel, Even if the number of the children of Israel is as the sand of the sea, only a small part will get salvation:

So that from one man, who was near to death, came children in number as the stars in heaven, or as the sand by the seaside, which may not be numbered.

And he took his place on the sand of the sea. And I saw a beast coming up out of the sea, having ten horns and seven heads, and on his horns ten crowns, and on his heads unholy names.