I think many people in the church are probably concerned that they can't answer all the questions that might come up. I am sure this affects people by playing on their doubts - especially if they have their own questions that they are wrestling with.
Mark DeverToo often preachers want to deal with people simply at the level of publicly accessible reason. We participate with them in their own epistemology. But this is not New Testament preaching. We have a message that is not from this world; it is from God. We don't know it by our own cleverness; we know it because God has revealed it.
Mark DeverThe gospel of Christ has never needed the gimmicks of man to effect conversion in the soul
Mark DeverOur culture is becoming more hostile to the gospel. This trend may be more established in Australia than in the USA, but it's now certainly the case that the postmodern mindset is dominant, particularly in the media. Therefore, when we start speaking in terms of certainties, we sound scary to other people.
Mark Dever