OrthodoxTexan said:
Nice post Forerunner. Very edifying.
I agree countrymouse. I think the basic premise of the OP and succeeding post is flawed. I have never read anything about a contention over the Sabbath being a principle, or even secondary reason for the schism.
Copied below are some interesting references regarding the Sabbath (referred to as Saturday in the article) and the Schism of 1054, and some historical quotes regarding Sabbath keeping in the east in the first 1,000 years.
Michael Cærularius
(Keroulários).
Patriarch of Constantinople (1043-58), author of the second and final schism of the Byzantine Church, date of birth unknown; d. 1058.
Suddenly, after no kind of provocation, in the midst of what John Beccus describes as "perfect peace" between the two Churches (L. Allatius, "Græcia orthod.", I, 37), Cærularius sent a declaration of war against the pope and the Latins. His agent was Leo, Metropolitan of Achrida in Bulgaria. In 1053 this latter sent a letter to Bishop John of Tranum in Apulia, complaining of certain Latin customs, especially fasting on Saturday and the use of azyme (unleavened) bread for the Holy Eucharist. He says that the letter is meant for "all the bishops of the Franks and for the most venerable pope" (published by Will, "Acta et scripta", 56-60). There is no doubt that it was dictated by Cærularius. John of Tranum sent the letter on to Cardinal Humbert of Silva Candida, who translated it and showed it to the pope. Cærularius then sent to the other patriarchs a treatise written by Nicetas Pectoratus (Niketas Stethatos in Greek), a monk of Studion, against azyme bread, fasting on Saturday, and celibacy.
Note the above partial article was copied from the Catholic Encyclopedia, the complete article can be found at the URL listed below.
http://www.newadvent.org/cathen/10273a.htm
Here are some interesting historical quotes verifying Sabbath keeping as late as the 11th century in the eastern churches.
5th Century
Christendom
"For although almost all churches throughout The World celebrated the sacred mysteries (the Lord's Supper) on the Sabbath of every week, yet the Christians of Allexandria and at Rome, on account of some ancient tradition, refuse to do this." The footnote which accompanies the foregoing quotation explains the use of the word "Sabbath." It says: "That is, upon the Saturday. It should be observed, that Sunday is never called "the Sabbath' by the ancient Fathers and historians." Socrates, "Ecclestical History," Book 5, chap. 22, p. 289.
Constantinople
"The people of Constantinople, and almost everywhere, assemble together on the Sabbath, as well as on the first day of the week, which custom is never observed at Rome or at Alexandria." Socrates, "Ecclesiastical History," Book 7, chap.19.
9th Century
Constantinople
(Photuus, Patriarch of Constantinople {in counter- synod that deposed Nicolas}, thus accused Papacy). Against the canons, they induced the Bulgarians to fast on the Sabbath." Photius, vonKard, Hergenrother, 1, 643
Note: The Papacy tried to bring the seventh-day Sabbath into disrepute by insisting that all should fast on that day. In this manner (she sought to turn people towards Sunday, the first day, the day that Rome had adopted.
Bulgaria
"Bulgariain the early season of its evangelization had been taught that no work should be performed on the Sabbath." Responsa Nicolai Papae I and Con-Consulta Bulllllgarorum, Responsum 10, found in Mansi, Sacrorum Concilorum Nova et Amplissima Colectio, Vol.15; p. 406; also Hefele, Conciliengeschicte, Vol.4, sec. 478
(Pope Nicholas I, in answer to letter from Bogaris, ruling prince of Bulgaria.) "Ques. 6-Bathing is allowed on Sunday. Ques. 10-One is to cease from work on Sunday, but not also on the Sabbath." Hefele, 4,346- 352, sec. 478
The Bulgarians had been accustomed to rest on the Sabbath. Pope Nicholas writes against this practice.
11th Century
Greek Church
"The observance of Saturday is, as everyone knows, the subject of a bitter dispute between the Greeks and the Latins." Neale, "A History of the Holy Eastern Church," Vol 1, p. 731. (Referring to the separation of the Greek Church from the Latin in 1054)
Constantinople
"Because you observe the Sabbath with the Jews and the Lord's Day with us, you seem to imitate with such observance the sect of Nazarenes." Migne, "Patrologia Latina," Vol. 145, p.506; also Hergenroether, "Photius," Vol. 3, p.746. (The Nazarenes were a Christian denomination.)