Because we have an idea in our head, does not mean our idea is true. You would agree.
So, because one doesn't understand something in scripture, but one has an idea that makes one believe something is contradictory, that does not mean there is a contradiction. That's all in one's head.
The facts of scripture, are what were presented to you - namely, that the Law, with its ordinances, including the Sabbath, is not binding on Christians.
However, I have had much experience talking with Sabbath believers. That's why I simply ask questions and let them give me the answer, because I know if they are honest, they will answer the question directly, and at some point, they will see that the answer is not compatible with what they believe.
Or, they will not answer the question, but talk around it.
In either case, I leave it there, because I am familiar with how the talking around goes.
Pretty much?

This is an example - pretty much answered but didn't directly answer.
You are pretty much following the familiar 'script', of which I am experienced.
Paul refered to one of the ten commandments, in saying that the Law, which includes that command, as well as the Sabbath, was abolished.
If I show someone that, and they argue that if this is the case,
then there is no restraint from sin, I know the person got the point. they saw it clear, but what they are trying to do now is, make sense of the scripture,
according to their view.
So, when I show them that Paul addressed their concern, right there in scripture, they will not see that, because unless the scriptures fit their view, they don't make sense.
Of course we do. Including die hard Sabbath keepers. We knew that from the beginning.
Thank you. I am not seeking Truth of God's Word.
...and certainly not truth as it relates to the Sabbath, since the scriptures are clear that the Law was given only o the Jews, and those who seek to be bound by it today, are actually under a curse, and have rejected the free gift of God, that released from that curse, because Christ fulfilled the law thus removing it.
I have found the truth of God's word. Millions have. So can you.
Paul, was well aware of 'die hard Mosaic' law keepers of his day.
He said, at Romans 10:2-4
2 For
I bear them witness that they have a zeal for God, but not according to knowledge. 3 For they being ignorant of God’s righteousness, and seeking to establish their own righteousness, have not submitted to the righteousness of God. 4 For Christ is the end of the law for righteousness to everyone who believes.
All Sabbath keepers today, whom I have met, fit that description.
I see your zeal. I appreciate you, and talking to you. May you have peace.