God created man on earth, from one end of heaven to the other.
This verse from Deuteronomy lead some rabbinic writers to believe that God had originally created Adam as a giant, half man, half god; that he was more powerful and had more knowledge than the angels. When the angels saw him, they trembled and asked God if there were now two powers in the universe, one in heaven and one on earth. Being the jealous god that he is, Yahweh placed his hand on Adam and reduced his height to one-hundred cubits and removed his divine knowledge. This shrinking of Adam is also said to be confirmed in scripture: “You hedge me before and behind; You lay Your hand upon me” (Ps. 139:5). Since Adam was formed from the dust of the earth, God placed his hand back upon Adam to reform him down to proper size.