Commonitory

The ''''' or Commonitory''''' is a 5th-century Christian treatise written after the council of Ephesus under the pseudonym "" and attributed to Vincent of Lérins. It is known for Vincent's famous maxim: "Moreover, in the Catholic Church itself, all possible care must be taken, that we hold that faith which has been believed everywhere, always, by all."

Charles Heurtley introduced the Commonitory, in his translation, as Vincent's personal reference to "distinguish Catholic truth from heresy" based on the authority of Holy Scripture by which "all questions must be tried in the first instance" and "supplemented by an appeal to that sense of Holy Scripture which is supported by universality, antiquity, and consent." by universality – of the whole Church by antiquity – held from the earliest times by consent – acknowledged belief of all, or of almost all, whose office and character gave authority to their decision