According to the OrthodoxWiki site, Eastern Orthodox Christians
believe the following about the Sabbath and its supposed change from the 7th day
Sabbath to the 1st day observance of Sunday- "By the second century the Lord's
Day was looked upon as the day of rest and the day for celebrating the Divine
Liturgy, replacing the Jewish Sabbath. Then in 325, the Council of Nicea
formally declared that the Lord's Day, Sunday, was the day of worship for
Orthodox Christians." If the Sabbath was changed by the Lord-why did it
take until the 2nd century?
LET the SCRIPTURES speak on the subject:
Whosoever therefore shall break one of these least commandments, and shall teach men so, he shall be called the least in the kingdom of heaven: but whosoever shall do and teach them, the same shall be called great in the kingdom of heaven. Matthew 5:19
Remember the sabbath day, to keep it holy....But the seventh day is the sabbath of the LORD thy God: Exodus 20:8,10