'God of Heaven' in the Bible

so that I may make you solemnly promise by the Lord, the God of heaven and the God of the earth: You must not acquire a wife for my son from the daughters of the Canaanites, among whom I am living.

"The Lord, the God of heaven, who took me from my father's house and the land of my relatives, promised me with a solemn oath, 'To your descendants I will give this land.' He will send his angel before you so that you may find a wife for my son from there.