This is detailed in
Revelation 12 (KJV) and especially in
Revelation 12:7 (KJV) and the following verses...
Click on these highlighted links above for the text.
Also regarding the 'separation' of Good and Evil in Heaven: Please read the entire text of
Luke 16:19-31 (KJV) which describes the "GULF" in paradise and why those locations are separated in the first place.
Luke's text is very technical because he was a medical Doctor and he was very precise in his words and in his teachings.