'Heaven' in the Bible

Then said Jehovah to Moses, Behold, I will rain bread from heaven for you; and the people shall go out and gather the daily need on its day, that I may prove them, whether they will walk in my law, or not.

and they saw the God of Israel; and there was under his feet as it were work of transparent sapphire, and as it were the form of heaven for clearness.

Remember Abraham, Isaac and Israel, thy servants, to whom thou sworest by thyself, and saidst to them, I will multiply your seed as the stars of heaven, and all this land that I have spoken of will I give to your seed, and they shall possess it for ever!