'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 I fasted and prayed before the God of heaven,

and said, I beseech thee, O Jehovah, the God of heaven, the great and terrible God, that keepeth covenant and lovingkindness with them that love him and keep his commandments:

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

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.