Is My Confession Really a Secret? (The Seal of Confession Explained)

Today, Fr. Mike tells us about the story of the patron saint of
confessors, St. John Nepomucene, who gave up his life because he
refused to break something called the "seal of confession", which
is a sacred duty of a priest to never reveal what is said in the
confessional. God himself established the priesthood as the
mediators of reconciliation in the Gospel (John 2-:21-22). The
Church takes this sacred responsibility so seriously, that any
priest who breaks the seal of confession is automatically
excommunicated.