I deny that it was anything like a universal practice. Some early Christians were specially endowed by God with the power of healing, in order that the Church might appeal to onlookers in a special way. But the Church has been built, and there is no need to show a stone from the quarry whence it was hewn in order to prove its existence and mission from God.
Radio Replies Volume 1 by Rev. Dr. Leslie Rumble MSC and Rev. Charles Mortimer Carty