"In lands beyond the jurisdiction of Rome there existed for many centuries bodies of Christians who remained almost wholly free from papal corruption. They were surrounded by heathenism and in the lapse of ages were affected by its errors; but they continued to regard the Bible as the only rule of faith and adhered to many of its truths. These Christians believed in the perpetuity of the law of God and observed the Sabbath of the fourth commandment. Churches that held to this faith and practice existed in Central Africa and among the Armenians of Asia. GC 63.1"
"Remember the sabbath day, to keep it holy. Six days shalt thou labour, and do all thy work: But the seventh day is the sabbath of the Lord thy God: in it thou shalt not do any work, thou, nor thy son, nor thy daughter, thy manservant, nor thy maidservant, nor thy cattle, nor thy stranger that is within thy gates: For in six days the Lord made heaven and earth, the sea, and all that in them is, and rested the seventh day: wherefore the Lord blessed the sabbath day, and hallowed it."
The passage explicitly mentions the observance of the Sabbath of the fourth commandment, directly referencing the Sabbath commandment.
"Think not that I am come to destroy the law, or the prophets: I am not come to destroy, but to fulfil. For verily I say unto you, Till heaven and earth pass, one jot or one tittle shall in no wise pass from the law, till all be fulfilled. 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."
The EGW passage describes groups holding to the perpetuity of God's law, including the Sabbath. This directly relates to Jesus' statement in Matthew 5:17-19 affirming the enduring nature of the law.
"And the dragon was wroth with the woman, and went to make war with the remnant of her seed, which keep the commandments of God, and have the testimony of Jesus Christ."
The passage describes Christians who remained free from papal corruption and adhered to the Bible, which is a thematic parallel to the remnant who keep the commandments of God and have the testimony of Jesus Christ.