It could be argued that casting out a few people to protect the majority is a wise choice but it's a slippery slope. Far too often, we simply cast out people because we don't understand them. Whether they have an affliction we don't know how to cure or treat - or whether they have feelings and beliefs we don't understand - we find it easier to simply banish them and try to pretend they don't exist. St. Paul sought the good of the many - not by casting out the few but by sharing the Gospel of Jesus Christ with everyone! And that's exactly what Jesus did - and still does, through us and with the help of the Holy Spirit!