Just because someone emphasizes the importance of keeping the Ten Commandments of God, it doesn't mean he or she is in bondage to a salvation by works theology.
The nonsense of accusing people of being legalistic for being in favor of keeping God's Ten Commandments, needs to stop.
Instead of jumping to conclusions about that person's relationship with God, ask questions for clarification.
Yes, we are saved by grace through faith, not by works (Eph. 2:8-9); but let's not forget that we were created for good works (v. 10).
When I look at God's Ten Commandments I see something good, not evil.
Hi I am not going to beat around the bush on this this is all about keeping the Sabbath day.
All other commandments including honor thy mother and father deal with immoral behavior. There is no neutral with your parents so this could be stated do not dishonor thy parents. The Sabbath in the new testament is not a once a week command. Here is Col 2 16 So let no one judge you in food or in drink, or regarding a festival or a new moon or sabbaths, 17 which are a shadow of things to come, but the substance is of Christ.
again romans 14 on this subject
5 One person esteems
one day above another; another esteems every day
alike. Let each be fully convinced in his own mind. 6 He who observes the day, observes
it to the Lord;[fn] and he who does not observe the day, to the Lord he does not observe
it. He who eats, eats to the Lord, for he gives God thanks; and he who does not eat, to the Lord he does not eat, and gives God thanks. 7 For none of us lives to himself, and no one dies to himself. 8 For if we live, we live to the Lord; and if we die, we die to the Lord. Therefore, whether we live or die, we are the Lord’s. 9 For to this end Christ died and rose[fn] and lived again, that He might be Lord of both the dead and the living. 10 But why do you judge your brother? Or why do you show contempt for your brother? For we shall all stand before the judgment seat of Christ.
Here is you consider that we should still keep the Sabbath go ahead and keep it but do not judge your brother who does not agree with you.
In Mark 7 And He said to them, “The Sabbath was made for man, and not man for the Sabbath. 28 Therefore the Son of Man is also Lord of the Sabbath.”
You see Jesus is the rest of the Sabbath as Hebbrews 3,4 teach about entering into the rest in Christ.
Gal 1 speaks about anyone coming to you with another gospel let them be accursed and I have had friends who went with 7th Day Adventist who target people already going to church rather than the unsaved to join them based on their view of the Sabbath. This group is one reason why the scriptures warn not to be led by every wind of doctrine. They start off with very basic Biblical truth and get you nodding yes yes and then introduce topics that you take in along with many very true statements. They teach that Sun Sabbath is the mark of the beast. They would never start you off with that but once you have been following that path you will end up there. The substance is Christ and the Lord Jesus is the rest we enter into.