I claim to be a follower of Christ, although not a very good one.  While having a little 'debate' with a friend, he brought up John 14:12, whoever believes in Me will also do the works that I do; and greater works than these will he do, because I go to the Father.  If you were on trial, would you be convicted of being a Christian?  Would I?  Even the heathen feed the poor and pursue good works.  I guess my point is, what evidence do you have that Christ dwells within in you, evidence that can only be explained by the presence of Christ?