Men’s Hearts Shall Fail Them. Mormon Beliefs - Part 5 - Praying to Our Heavenly Father. Doctrine and Covenants 78:15-16. Mormon Beliefs - Part 4 - The Holy Ghost. Mormon Beliefs - Part 3 - The Fall of Adam & Eve. Mormon Beliefs - Part 2 - The Creation. Mormon Beliefs - Part 1 - The Premortal Life.