Testimonies are great things about what the Lord has done for us, but no-one will be offended when you talk about what God has done for you. You need to be specific about sin, about Christ's death on the cross, about others' need for a saviour, and about their need to repent and trust in Christ.

Actually, having a few questions of your own shouldn't prevent you from sharing the gospel with others. You can explain to them that while you still have a few unresolved questions yourself, you don't have enough faith to not believe.

I love people thinking about apologetics. I just think that we have to be careful. We need to realize that we can argue about evolution or the existence of God or any number of things, but until we tell people the message of the cross, we have not evangelized them.

There are times when the gospel just seems to be powerfully at work in a nation, and thousands upon thousands are converted. If you think about what has happened in Latin America, Africa and East Asia all in the last hundred years, it is breathtaking. We have seen an expansion of the gospel as we have never seen before in the history of the church.

If 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.

Most people are glad for somebody else to share their own story of how they have found spiritual help. The problems start when you begin to universalize your story - when your narrative becomes authoritative and begins affecting their lives as well.

Evangelism is not simply looking at someone and saying, "Look, you have to become a Christian". Instead, an evangelist tells us the truth about who God is, and explains where we stand as a result of that. People can ignore us - indeed, they have every legal right to do so.