A Jigsaw Guide to Making Sense of the World helps us put the broken pieces of life back together, enough to see the big picture, but it's important to remember the role of reason. When Peter says Christians need to be prepared to share the reason for the hope that they have (1 Peter 3:15), he says we are responsible to reach out to those who are looking at life - looking at us - and looking for answers. No one will ever choose to commit their life to Christ solely on the basis that it sounds reasonable, but it is important to anchor our beliefs in the real world. When a belief seems to run aground on the rocks of reality, it will be that much easier to walk away.
Be prepared to share good reasons to believe God helps us make sense of this broken world - revealing the Bible is the picture on the box we've been looking for, and with the help of the Holy Spirit we can move on from dealing with the brokenness in the world to dealing with the brokenness in us. The point of seeing is believing and when people have seen enough, the question is: to believe or not to believe. As CS Lewis said, there are only two kinds of people in this world, those who bow the knee to God and say "Thy will be done!" and those who refuse to bow the knee, and to whom God says, "thy will be done!"