Heaven

Heaven, also called Paradise, is an ageless, ethereal, higher, holy spiritual realm of ultimate peace and existence created and ruled by God, intended to be the populated home-realm for both Himself, His angels, and the souls of deceased, righteous human mortals to reside. It is inhabited by and serves as a dwelling place and a base of operations for all angels, and is a final resting place of worthy human souls of the deceased that is located above the mortal plane.

Heaven is a beautiful realm that is supposedly populated by every soul (both human and non-human) that has successfully found peace. Lucifer used to reside in Heaven before he was cast down to Earth for eternity by his father.