The Holy Bible

"Holy Scripture containeth all things necessary to salvation: so that whatsoever is not read therein, nor may be proved thereby, is not to be required of any man, that it should be believed as an article of the Faith, or be thought requisite or necessary to salvation. In the name of the holy Scripture we do understand those Canonical Books of the Old and New Testament, of whose authority was never any doubt in the Church."

Article VI, The Thiry-nine Articles of Religion, Established in the Church of England (1571)