'Sky' in the Bible

And the sky was split apart like a scroll that is rolled up, and every mountain and island were moved from their place.

These have the authority to shut the sky, so that {it does not rain} during the days of their prophecy. And they have authority over the waters, to turn them to blood, and to strike the earth with every plague as often as they wish.

And large hailstones, weighing about a hundred pounds, came down from the sky upon people, and the people blasphemed God because of the plague of hail, because the plague of it was very great.