If someone confesses a serious crime in the Sacrament of Reconciliation, why can't the priest reveal that sin to the authorities or even tell the penitent that he must do so in order to be forgiven?

Cat from CA, who is a Protestant, explains that this is one of the only Catholic teachings she has a difficult time understanding. 

Listen to Patrick's helpful explanation, as he digs into the beauty of Confession and shares why the seal is meant to protect you.