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.
Mark DeverDo you want to know that your new life is real? Commit yourself to a local group of saved sinners. Try to love them. Donโt just do it for three weeks. Donโt just do it for six months. Do it for years. And I think youโll find out, and others will, too, whether or not you love God. The truth will show itself
Mark DeverWe mustn't be content to just sit around pointing out the errors in others; we actually need to be sharing the gospel and praying for people to be converted.
Mark DeverI love Iain Murray's definition of worldliness: towards the end of Evangelicalism Divided, he says that worldliness consists of loving idols and being at war with God. I think that's true in the lives of too many professing Christians today.
Mark DeverWe do not fail in our evangelism if we faithfully tell the gospel to someone who is not subsequently converted; we fail only if we do not faithfully tell the gospel at all.
Mark Dever