Christianity is a manor of living.

The Greek historian Plutarchus wrote that Christians were known to the Romans as people who cared for each other and especially for the poor.

 It turns out that Christians were unable to sustain this individual practical concern for each other and for the poor once they were meeting in larger groups. During big meetings believers could only listen to explanations of the Holy Scriptures. The speaker was unable to impose a manor of living. Only in smaller groups participants can support each other's effort to live the gospel.The pope, a bishop or a pastor might try to convince believing listeners that truly taking to heart the message of Jesus is not just listening to a sermon but tantamount  emulating the early Christians and caring for those around them and especially for those in need.