This is a monologue by a skeptic, someone who doubts Christianity and sometimes ridicules it. But this person is beginning to doubt his or her own doubt.
We live in an age in which Christianity is viewed very skeptically in Western culture. And let's be honest here. The big miracles in the Bible are difficult to reconcile with the world as we know and understand it. Of course, atheism requires some leaps of faith also.
In the end probably no one is argued into or out of faith despite all the arguments that could be marshaled on one side or the other. C.S. Lewis said, "I believe in Christianity as I believe that the sun has risen: not only because I see it, but because by it I see everything else."
This monologue probably works best in a seeker setting, where audience members with doubts can identify with the actor and follow his or her journey. The monologue could also work with long-time believers if part of a conversation about how we relate our faith to non-Christians around us.
Related scriptures:
Hebrews 11:1 Jude 1:22 Mark 9:24