This time, Dr Emma and Janina examine a question close to the good doctor's heart, how did Christianity grow from such humble beginnings to become a dominant force in the world? How do religions spread? What did Christianity do differently? Featuring: Grumpy Jesus! ????♂️????️ Grumpy Paul! ???? Constantine, The Chrissy Teigen of Rome! ???? ♻️ NZ national anthem performed by Hayley Westenra.