'Heaven and Earth' in the Bible

Melchizedek blessed Abram and said, "Abram is blessed by God Most High, Creator of heaven and earth,

But Abram answered the king of Sodom, "I have made an oath to the LORD God Most High, Creator of heaven and earth,

as a promise to the LORD, the God of heaven and earth, that you won't acquire a wife for my son from the Canaanite women among whom I'm living.