When talking with nonbelievers about your Christian faith (or even when talking with current believers who are experiencing doubts about their faith), one of the most important chapters in all of Scripture to keep at the forefront of your mind is 1 Corinthians 15. In this one chapter, you can find two powerful reasons to believe that Christianity is true.
First, we see Paul’s emphasis on the importance of the Resurrection. He writes, “If Christ has not been raised, then our preaching is in vain and your faith is in vain” (1 Corinthians 15:14, ESV). Not only that, but if Christ hasn’t been raised, we Christians are “misrepresenting God” (verse 15) and we “are still in [our] sins” (verse 17). If the Resurrection did not occur, “we are of all people most to be pitied” (verse 19).
Paul is making an important point here that many overlook. According to Paul, the entirety of the Christian worldview hangs on the reality of Jesus’ resurrection. If Christ did not rise in the real world, we’ve all been wasting our time and deserve pity.
According to Paul, we can have all the faith in Christ we want, but if Jesus didn’t actually rise from the dead, that faith is in vain. So, if we don’t have good reasons to believe that Christ rose, we don’t have good reasons to be Christians. Fortunately, we do have such good reasons — very good reasons, in fact.