At least the ten commandments are God’s revelation, aren’t they? (3)

“Honor the sabbath, to keep it holy” – the third commandment. But “the sabbath” is Saturday. How dare Christians move worship to Sunday! By whose authority? If the ten commandments are God’s eternal law, who dares to change them? Seventh Day Adventists and Seventh Day Baptists worship on the sabbath, on Saturday. Do they take the Bible more seriously than we do?