'Face of the Earth' in the Bible

Then the Lord sent a wind, driving little birds from the sea, so that they came down on the tents, and all round the tent-circle, about a day's journey on this side and on that, in masses about two cubits high over the face of the earth.

So he sent men to Balaam, son of Beor, at Pethor by the River in the land of the children of his people, saying to him, See, a people has come out of Egypt, covering all the face of the earth, and they have put up their tents opposite to me: