Some people are not healed, but talk to the many that have been. I believe they are the best church in the world, because of adherence to scripture, moral standard, the love for people, and a vision to lead anyone to Jesus. There is a strong push to be active in some kind of ministry to reach lost souls before the return of our Lord, as it should be. Time is not a luxury we have because no one knows the time someone will die, or when the return of Jesus is coming. The time to witness is now, and their vision is to reach the world.
All participation is voluntary, and ministry at the expense of family is strongly discouraged.
I encourage you to listen to the testimony of current members, and hear of the many changed lives God has brought about through these willing vessels. One of my brothers in the church was a hopeless alcoholic and drug abuser before Jesus set him free, instantly, and Jesus used these people to witness to him, and pray for him. Remember that it was the religous people who nailed Jesus to the cross, because He was upsetting their beliefs. Doesn't it make sense that the same would happen today, not only to the Potters House, but to all churches with strict adherence to scripture, straight forward preaching, and moral standards. Jesus and his apostles had many enemies, and if all we have are friends then we are doing something wrong.