I am occasionally offering evidence that strengthens the case for Christianity. For example, when Christ says this in the book of Mathew chapter 16 verse 18:
"And I say also unto thee, That thou art Peter, and upon this rock I will build my church; and the gates of hell shall not prevail against it."
And then I offer this
http://www.internationalskeptics.com/forums/showthread.php?t=85633&highlight=spent+years+Rome
and the largest Christian Church in the world is based in Rome. Then it is my opinion that this evidence strengthens the case for Christianity. But of course this one fact does not prove Christianity but it certainly is a factor in its favor.
Much like science. When those 2 scientists (through intelligent design) designed an experiment that when they passed some electricity through various elements thought to exist on earth in its early stages got some organic matter -- that was some evidence for the theory that life came from non-living chemicals. The "intelligently designed" experiment certainly wasn't proof that life came from non-living chemicals but it was a factor in its favor. Much like Peter "the Rock" being in Rome (in light of what Christ said) is a factor in favor of the case for Christianity.