'Heavens' in the Bible

In the beginning, God created the heavens and the earth--

And the fountains of the deep and the windows of the heavens were closed, and the rain from the heavens was restrained.

And they said, "Come, let us build ourselves a city and a tower whose top [reaches to] the heavens. And let us make a name for ourselves, lest we be scattered over the face of the whole earth."

And he brought him outside and said, "Look toward the heavens and count the stars if you are able to count them." And he said to him, "So shall your offspring be."

And God heard the cry of the boy and the angel of God called to Hagar from the heavens and said to her, "{What is the matter} Hagar? Do not be afraid, for God has heard the cry of the boy {from where he is}.

And he dreamed, and behold, a stairway was set on the earth, and its top touched the heavens. And behold, angels of God [were] going up and going down on it.