SIEVERNICH. More and more visitors are coming to the village church of St. John the Baptist in Sievernich. Not waves of pilgrims yet, but in Sievernich, a district of Vettweiß in Voreifel near Bonn, the influx of visitors is increasing. The village has 460 residents, about 360 of whom are Roman Catholic. Like other visitors, I cross the churchyard where the gravel between the graves crunches beneath my feet as I search for the entrance. My eyes wander through the church. Just past the door on the left stands a Fatima Madonna. Candles lit by earlier visitors burn in...