Seal of the Confessional (Lutheran Church)
The Seal of the Confessional is a Christian doctrine which affirms the special protection and privilege of the words spoken during confession between a penitent (church member) and his or her pastor. A form of this principle exists in the doctrine and practice of many modern Lutheran churches.
Source: Wikipedia — Seal of the Confessional (Lutheran Church) (CC BY-SA 4.0)