'Surface' in the Bible

Then a wind set out from Yahweh, and it drove quails from the west, and he spread [them] out on the camp about a day's journey on one side and about a day's journey on the other, all around the camp, about two cubits on the surface of the land.

and from Bamoth to the valley that [is] in the territory of Moab, [by] the top of Pisgah, which overlooks the surface of the wasteland.

He sent messengers to Balaam son of Beor [at] Pethor, which [is] by the river, in the land of the children of his people, to summon him, saying, "Look! A people went out from Egypt. Look! They cover {the surface of the land}; they [are about] to dwell opposite me.

'Look! A people went out from Egypt. Look! They cover {the surface of the land}. Now, go, curse them for me. Perhaps I will be able to attack them and drive them out."