'Heaven' in the Bible

It happened, when Yahweh would take up Elijah by a whirlwind into heaven, that Elijah went with Elisha from Gilgal.

It happened, as they still went on, and talked, that behold, a chariot of fire and horses of fire separated them; and Elijah went up by a whirlwind into heaven.

Then the captain on whose hand the king leaned answered the man of God, and said, "Behold, if Yahweh made windows in heaven, could this thing be?" He said, "Behold, you shall see it with your eyes, but shall not eat of it."

and that captain answered the man of God, and said, "Now, behold, if Yahweh should make windows in heaven, might such a thing be?" and he said, "Behold, you shall see it with your eyes, but shall not eat of it."

Hezekiah prayed before Yahweh, and said, "Yahweh, the God of Israel, who sit [above] the cherubim, you are the God, even you alone, of all the kingdoms of the earth. You have made heaven and earth.