'Sky' in the Bible

Come! Come! Flee from the land of the north,' says Yahweh; 'for I have spread you abroad as the four winds of the sky,' says Yahweh.

Then lifted I up my eyes, and saw, and behold, there were two women, and the wind was in their wings. Now they had wings like the wings of a stork, and they lifted up the ephah basket between earth and the sky.

The angel answered me, "These are the four winds of the sky, which go forth from standing before the Lord of all the earth.