Some Biblical Scholars insist on a pre-genesis creation in which the angelic beings were made, this creation pre-dates the 6 day creation of the 'heavens and the earth' mentioned in Genesis 1:1.
This idea comes from the Book of Job: Job 38:4 - "Where were you when I laid the foundations of the Earth; tell me if you know so much... (7) while the morning stars sang together and all the angels shouted for joy?"
We are clearly told here that intelligent beings existed prior to the creation of the Earth and of Adam. Much debate exists concerning exactly when the angelic beings were created. Which denominations support an angelic creation event prior to the Genesis creation event?