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 DeverIf joy or urgency are missing from our presentation of the gospel, then our testimony to Christ will be missing that sort of fullness that we find in the New Testament.
Mark DeverChristians, like everyone else, are prone to be selfish and scared, and wanting others to think well of them. So, although we possess what one part of us knows is the greatest news in the world, we don't act as though it is. Consequently, we share the gospel less than we should.
Mark Dever