My friend was having trouble reconciling the fact that I am both a scientist whom she respects and someone who calls himself a Christian. How do I tell my friend that being a Christian has not always been foundationally defined on belief, but a transformative way of newly living, a faith?
As much as we like to speak of a mystical union with Christ and as much as many of us continue, week after week, to affirm it, this mystery of our partaking of Christ's person is not a mystery that we consistently embody or appreciate.
All of us are biased to seek information that fits what we already believe. Confirmatory evidence jumps out at us, and we find it emotionally appealing.
The born again experience doesn't require a specific set of beliefs, but rather a specific social/emotional process; dogmas or explanations are secondary. It's not an experience unique to Christianity.