At my church we often have members stand before the congregation and give testimony. If you just look at the transformed lives you see the power of The Gospel.
BTW, I've met K.P. Yohannan at church. I believe him to be honest, sincere and truly driven by a love to preach The Gospel.
I noticed that too. Often you’ll hear someone giving their testimony say something like, “I was driving down the road and saw a Bible verse that really spoke to me...” or “Someone shared a verse with me that...”. We have had a number of these stories at our church. Every time I hear one of these I want to jump up and say, “AH HA...”. But the Holy Spirit restrains me (as well as my wife). ;O)