'God of Heaven' in the Bible

When I heard these words, I sat me down and wept, and mourned certain days, and fasted and prayed before the God of heaven,

and said, "O LORD God of heaven, thou great and terrible God, thou that keepest covenant and mercy for them that love thee and observe thy commandments:

Then said the king unto me, "What, then, is thy request?" Then made I my prayer to the God of heaven,

Then answered I them, and said, "The God of heaven, he it is that causeth us to prosper: and we be his servants. Let us get up and build. As for you: ye have no portion, nor right, nor remembrance in Jerusalem."