Let's say that you want to do everything out of the joy that comes from knowing the Lord. Well, a lot of people aren't built like that emotionally. If they think that some sort of feeling is the basis for their action, they are going to feel justified sitting around, although they are going to feel bad that they have never taken one step of obedience because their heart is cold.
Mark DeverI assume that normally the Lord will be bringing people to himself through the instrumentality of the preached word. However, we have to be very careful that we don't assume that if we are 'X' faithful in evangelism, then we will see 'Y' results right now. It doesn't work like that.
Mark DeverAdvice on evangelism needs to be tailored to individual situations. For instance, I know someone who needs to be encouraged to speak less and work more. That would be a better testimony for him because he has certainly let his work colleagues know about Jesus. It's not that I don't want him to witness about Jesus, but I have a lot of sympathy for his employer. He is paying for work to be done.
Mark Dever