Reality: Questions Regarding the Authenticity of the Sigillion of 1583
Following upon the previous article's discussion of the ritual anathemas called to be pronounced annually on all non-Eastern Orthodox Christians, the question of the Sigillion of 1583's authenticity, especially with its anathemas, involves a few key details which, if glossed over, will lead to an erroneous conclusion regarding the canonicity of its contents. A helpful study of this was done in 2011, entitled, "The 'Sigillion' of 1583 Against 'the Calendar Innovation of the Latins': Myth or Reality?" This 2011 study contains many valuable details that help to establish the question of the authenticity of the anathemas.
Regarding the occasion of the study, the bishop (Cyprian of Oreoi) who wrote this oft-cited study that purportedly showed the Sigillion was a "forgery," was part of a "non-canonical" Orthodox group called "the Holy Synod in Resistance." This group dissolved in 2014 when it joined another independent Orthodox group called "the Genuine Orthodox Church of Greece" (which also has an American branch), none of which are part of what is sometimes referred to as "world Orthodoxy," i.e. your typical Greek Orthodox, Antiochian Orthodox, Russian Orthodox (including ROCOR), OCA, etc. parishes. The context of his study regards the disputed use of a certain calendar for the purposes of properly establishing days of worship. There are basically three calendars in question: (1) the original Julian Calendar (the canonical one), (2) the Gregorian Calendar (the condemned one), and (3) the Revised Julian Calendar (which was an open question to him at the time of his writing).
His study amounted to show that a certain monk, Iakovos, in 1858, essentially synthesized the material from several existing canonical texts from synods dating from 1583, 1587, 1593, and 1616 (a span of 33 years), which he confirms are in themselves all authentic, but which were synthesized by Iakovos together into a form that came to be known as "the Sigillion of 1583." This text has been widely accepted throughout the Orthodox world, not only in Greece and in the Rudder (Pedalion), but also was (according to the bishop's study) published in the official periodical of the Russian Orthodox Church Abroad (ROCA) in 1924 (after the fateful events of the Bolshevik Revolution). The original Tomos (official Church decision and declaration) of 1583 is apparently lost, but apparently that date served for Iakovos as the canonical starting point for the conciliar decisions and anathemas which are stated in the follow-up synodal, canonical documents, although a joint Epistle from Patriarchs Jeremiah II of Constantinople (who famously corresponded with the Lutherans) and Sylvester of Alexandria apparently survived from the original 1583 Synod.
The main body of the text of "the Sigillion of 1583" comes from 1616, where the anathemas are all explicitly given (and nowhere called into question). It appears the seventh, more general, anathema of 1616 is amplified by earlier material from 1593 in order to give the sense of the general anathema in the total context given by the prior official documents going all the way back to 1583. This 1616 text confirms the instruction to "read this Tomos frequently in Church," which serves as the ground for including the anathemas in the present-day Synodikon, making their inclusion authentic even if the date of 1583 is ultimately symbolic. The 1593 anathema against the Gregorian calendar was later confirmed, together with the other anathemas of 1616, by Dositheus, who was the great figure of the Synod of Jerusalem in 1672.
The purpose of the bishop's study of all of this was to show that there needs to be a Pan-Orthodox Council to settle the matter of the Revised Julian Calendar, not the Gregorian Calendar, the Gregorian Calendar being clearly and unambiguously condemned and anathematized. Again, it must be stressed that the contents of the study did not call into question the anathema against the users of the Gregorian Calendar, which he affirms is an authentic anathema. And given the fact that his "Holy Synod in Resistance" dissolved and entered into the Julian Calendar group, it seems he sided against the position of his own study and so closed the question of the Revised Julian Calendar. I might add that a Pan-Orthodox Council is a practical impossibility, which is an enormous problem in and of itself for the Eastern Orthodox.
In conclusion, the so-called "Sigillion of 1583" has a convoluted provenance, but is certainly authentic according to Eastern Orthodox canonical realities, even if the contents (including the signatures) are a collation and synthesis of multiple authentic documents and declarations spanning from 1583 to 1616. In short, the anathemas are not mythical. All of the anathemas are present at some place in these documents (largely from the 1616 document). None of them were truly called into any question by Bishop Cyprian's study (the contents of the Seventh Anathema against the Gregorian calendar being a synthesis of the final general anathema of 1616 together with the substance of the anathema from 1593 confirmed by Dositheus in chapter 11 of his Dodecabiblos), even though the 1583 date ends up being symbolic in nature. Thus, rather than accusing Iakovos of "forgery," it is apparent from the bishop's own study that Iakovos acted with integrity to carefully collate and re-present the authentic canonical position of the Eastern Orthodox Church, incorporating and summing up into the 1616 document what was spread across several synods spanning a 33 year period and multiple documents dating from 1583. He thus took the official tomoi and authentic anathemas of this period and gave them together as a single, unified document in 1858. In short, despite the convoluted provenance of the final version, the Sigillion of 1583 as found in the Synodikon is no myth, but stands as the authentic communication of the Eastern Orthodox position and of the anathemas that are incorporated into the Synodikon read on the First Sunday of Lent, the Sunday of Orthodoxy.