You have to push on both pedals to make the wheels go 'round. Similarly, you need faith in Christ as well as knowledge. The problem is that there are always Christians who want to push one pedal - either knowledge or experience. We need both.

I don't see a clerical class in the New Testament to which evangelism has been delegated. Preaching is not the only way to evangelize; it can happen in everyday conversations too. And you don't need a special gift to witness to the Lord in these situations.

We may be sinking in the North Atlantic in the most famous ship disaster of all time, but God can still use us to reach out and save others through our witness.

Today is what the Lord has prepared you for.

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.

God can use even stray, honest comments to bring people to himself.

It's fine to deal with people's doubts and explain why they have good reasons to believe in Christ. But until we tell them the good news of Jesus Christ, we haven't done our job. They need a saviour that God has provided them in Christ. Once they know that, we can do as much apologetics as we need to.