The phrase "to believe the soul" means that you have faith in the existence or importance of a person's inner being or spiritual nature. Full definition
So either Scalfari is a poor journalist who has failed to accurately report the meaning of the Pope's words... or the Pope really does believe the souls of the unsaved will cease to exist, rather than being tormented in hell. (premierchristianity.com)
Whenever we think of soulmates we refer it to a romantic journey, believing our soul mate must be the person with who we can make a better and beautiful life. (top10millionairedatingsites.com)