Long before I became a Christian, Chris McDonald lodged “O Holy Night” in my brain. We were middle-schoolers, and we weren’t the coolest kids. We were kindred spirits who were okay with being more toward the fringe than the center of things. I don’t think anyone saw any special talent in either of us. Chris, though, had a super-power. He could sing. Really well. One year, just before Christmas, all the students, teachers, and administration assembled in the auditorium. I only remember one thing from that day. Chris McDonald, my friend from the fringes, stood up next to the piano. The auditorium became completely quiet. Then, from the piano, the…