Like hairs on the head, mortal man is joined to Jesus Christ, the head of all, but they are full of transgressions and sins because of man’s delight in the flesh. But the Church regenerates and purifies these from the unclean stench and filth of sin by penitence and confession, just as hair is cleansed from dew and drops, and as dust is shaken out and cleansed from wool.
–Saint Hildegarde of Bingen (1098-1179)