'God of Heaven' in the Bible

And it came to pass, when I heard these words, that I sat down and wept, and mourned certain days, and fasted, and prayed before the God of heaven,

And said, I beseech thee, O LORD God of heaven, the great and terrible God, that keepeth covenant and mercy for them that love him and observe his commandments:

Then the king said unto me, For what dost thou make request? So I prayed to the God of heaven.

So I prayed to the God of heaven and I replied to the king, "If it seems good to you, and if your servant has found favor with you, would you send me to Judah, to the city where my ancestral sepulchers are located, so I can rebuild it?"

Then answered I them, and said unto them, The God of heaven, he will prosper us; therefore we his servants will arise and build: but ye have no portion, nor right, nor memorial, in Jerusalem.