 Baptism is a birth, or more technically, I suppose, it is the rebirth into the new and abundant life that Christ came to bring after being united with him in his death. In my former parish, the Cathedral of St. Paul, I was sometimes asked to give tours to Catholic school groups. I would just love crowding these little ones with their adult chaperones into the baptistry. And then once in the baptistry, I'd ask them, who knows what happens in here? Hands would shoot up.