In this episode of Religion Today, host Martin Tanner describes how Catholicism, the Eastern Orthodox faith, and most of Protestant Christianity do not believe in the pre-existence of souls, spirits or intelligences.  Latter-day Saints are the current exception.  There are many however, many Bible verses, in the Old and New Testaments, which clearly state or pre-suppose the pre-mortal existence of the human spirit or soul.  The Book of Mormon's Book of Ether includes a description of the pre-earth life spirit body of Jesus.  Early Christian Father Origin, Jewish philosopher Philo and early Greek philosopher Plato believed in the pre-mortal existence of human spirits.  Joseph Smith also described such a belief in his famous funeral sermon, the King Follett Discourse, just weeks before he was killed.