The Seal of the Confessional (also Seal of Confession or Sacramental Seal) is a Christian doctrine forbidding a priest from disclosing any information learned from a penitent during Confession. This doctrine is recognized by several Christian denominations:
Seal of the Confessional (Anglicanism) Seal of confession in the Catholic Church Seal of the Confessional (Lutheran Church)
See also Priest–penitent privilege – legal recognition of privacy of confession