Devils and Diseases in the Bible

Then he called his twelve disciples together, and gave them power and authority over all devils, and to cure diseases. Luke 9:1 Please, could any of you reading this verse explain what kind of power and authority did Jesus give his twelve apostles? And how come the apostles were never able to spread the Word of God in China, India, Indonesia, Malaysia, Vietnam, Thailand, Japan, Korea? Indeed, never converted such countries into Christianity like they did the Philippines - the only Christian country since the 16th century and how come diseases like leprosy and sick politics have never been cured with the power and authority from Jesus? Indeed, how exactly did the apostles of Jesus cure which or what diseases anywhere in the world? Poch Suzara Twitter# Facebook# Google#