'Sky' in the Bible

The men of Ai turned and looked back, and smoke from the city was rising to the sky! They could not escape in any direction, and the troops who had fled to the wilderness now became the pursuers.

As they fled before Israel, the Lord threw large hailstones on them from the sky along the descent of Beth-horon all the way to Azekah, and they died. More of them died from the hail than the Israelites killed with the sword.

And the sun stood stilland the moon stoppeduntil the nation took vengeance on its enemies.Isn’t this written in the Book of Jashar?So the sun stoppedin the middle of the skyand delayed its settingalmost a full day.