They have to now play the emotion card. They didn't have to in the past because the ministry was more fruitful/rewarding. The field is dry and not interested in the least and they've had to evolve that effort to keep people somehow linked into their concept of preaching. But it is not personally rewarding standing by a trolley only talking to your mate.
Personal knowledge of doctrine and the Bible is downplayed and obedience is all that is required, The "carrot" of the paradise is really strong and the only thing they really have to offer.