The Galatians 3 quote is particularly compelling.
Now, let us consider a strange paradox of ecclesiastical history:
In the 5th century, a difference in Christological terminology caused a schism at Chalcedon. In the 11th century, the Chalcedonian churches separated over the issue of papal infallibility vs. the rights of individual bishops within autocephalous synods.
In the 16th century, one of those churches, that being the Roman Catholic Church, was challenged by Martin Luther, and lost control of its dioceses in most of Northern Europe due to the perception of being excessively legalistic.
While three primary denominations emerged (Lutheran, Calvinist, Anglican), and two others were spared (Moravian, Waldensian) there was also a “Radical Reformation” which produced denominations like the Anabaptists. Also there was later a schism between Methodists and Episcopalians and the Church of England, which is very complex and not germane, as far as I can tell, but should greater relevance attach to issues like the Jacobite Rebellion, the Non-Juring Bishops, and so on, we have numerous bona fide Anglicans including one who I did with all sincerity endorse for the episcopate, not that I, a non-conformist, have a say, can explain.
Non-conformists included Puritans, the distant descendants of my denominational heritage, the Quakers, and Baptists, as well as English Presbyterians, and I suppose by law, “north of the Border,” as they say in the UK, Scottish Episcopalians after the triumph of full Calvinist Presbyterianism in the Established Church of Scotland, which had the interesting effect of making the British sovereign the Defender of the Faithful, the Head of the Church of England, and a member in full communion with the very different Church of Scotland. But of most interest were the Baptists and Puritans, because they had been influenced by the Radical Reformation in Germany. So in the New World, as it was then commonly known, it was inevitable that the Non Conformists of Britain and those of the Radical Reformation would in course of time converge, in some cases completely, such as the merger of the Evangelical Reformed and Congregational churches to form the United Church of Christ, which if the OP were written to complain about in its present anomic approach to Christianity, or any of the shrinking mainline Protestant denominations that has capitulated to secular values and media pressure on human sexuality, I would support it. However I sense a wider net has been cast.
In the late 19th and early 20th century, a remnant of a revivalist apocalyptic group known as the Millerites was reorganized, under an individual as charismatic as Martin Luther and certainly more prolific an author. This denomination makes strict Sabbatarian and dietary observance of great importance, and of this I have no objection, but apparently, a very small minority of its members, none of whom are known to me personally (I have known hundreds of Adventists and been greatly aided by some) also seem determined to attack the Roman Catholic Church and all non-Sabbatarian churches, including Eastern and Oriental Orthodox churches which had nothing to do with the legalism that Martin Luther complained of, not to mention traditional Lutherans, Calvinists, Anglicans and other Protestants who are not Sabbatarian.
The paradox is the legalism that Luther accused the Romans of having, which prompted him to advocate several of the Solas, most notably sola scriptura and sola fide, is exhibited when verses in Galatians which appear to contradict certain aspects of Adventist doctrine are ignored yet the importance of sola scriptura is strongly emphasized, by this vocal anti-non-SDA minority.
And I wouldn’t even care, except so many threads are being posted on certain Theology forums on this site when we have other more relevant matters to discuss, like religious freedom and worship practices in the context of the global pandemic, or the impending schism in the United Methodist Church, or the recent and in my opinion glorious victory of the Anglican Diocese of Fort Worth against its former denomination regarding real estate, which could end mainline denominational denial of real estate to departing conservative parishes where there is no longer a shared bond of faith but in some cases a difference vaster than that between traditional Protestantism and traditional Roman Catholicism,
Also, a central claim made very often, that the traditional Protestants and Catholics and Orthodox ignore the ten commandments has been shown false by
@BobRyan , an Adventist who I have great respect for who did compile the catechisms of these churches.
