The teachers had their lives as the example of their office; except that, they had no other evidence. Miracles are known afterwards; legends are formed afterwards; poems are made afterwards; temples are built afterwards; following has increased afterwards; their words have been valued afterwards. But during their lifetime they met with nothing but opposition and the constant change of the followers, agreeing one day, disagreeing another day; and all sorts of difficulties they have suffered, even such as crucifixion.