You are touching something that is not already existing. If we talk about evangelism, it may well be a new way of approaching evangelism, but we already have many methods of evangelism. But (as series of handbooks about scripturally-based) discipleship is really an innovative thing.
I have developed a deep appreciation for John and his ministry. He has a passion for God’s mission and is gifted with the ability to creatively translate that into curricula and other materials that help individuals connect God’s purpose for their lives with his larger plan for humanity. Over the years, I have repeatedly referenced and been blessed in my own ministry by the materials that he has written and developed. I have no hesitation recommending him to any involved in missions and missiology.