Seal of the Confessional (Anglicanism)
The Seal of the Confessional is a principle within Anglicanism which protects the words spoken during confession. Confession has certain censures on disclosure as there is an understanding among the clergy that there is an inviolable confidence between the individual priest and the penitent.
Source: Wikipedia — Seal of the Confessional (Anglicanism) (CC BY-SA 4.0)