The fruit does not remain. Six months later there is nothing to be seen for all the aggressive evangelism. The capsule technique of soul winning has produced stillbirths. Strangely enough it begins with a valid determination to preach the pure Gospel of the grace of God. We want to keep the message simple - uncluttered by any suggestion that man can earn or deserve eternal life.
Justification is by faith alone, apart from the deeds of the law.
From there we reduce the message to a concise formula. Yes, the Bible says you are saved. But on closer study we are forced to have second thoughts and conclude that we have oversimplified the Gospel. The first fatal flaw is the missing element on repentance. There can be no true conversion without conviction of sin.