Understood. We disagree.
Again, disagree.
a.) Jesus was not observing the Sabbath the day before His resurrection.
b.) Yes, John was Jewish, but John, unlike most Jews of his day, was a believer in Christ, and therefore he was, like all we who believe today, in Christ. As such, I feel sure he would have agreed with what Paul said late in Romans 2 about just who true Jews are, and in Romans 9-11 about just who makes up God's Israel. Even so, God, the ultimate author of the Bible (all Scripture is God-breathed), is really the One Who said those things.
c.) In Acts 20:7, Luke is crystal clear that it was the practice of the early church to gather together on the first day of the week to break bread together. And in Revelation 1:10, John very clearly refers to the first day of the week, as in Acts 20:7 and 1 Corinthians 16:2, as the Lord's Day. There is, however, absolutely no evidence anywhere, much less in Scripture, that the early apostolic church continued Jesus's custom of going to the synagogue and observing the Sabbath. But they were not Law-breakers...
Not true at all. None of the Ten Commandments are nullified. There may be some out there who think that, but by and large no. I am a bit curious to hear why you think that... because of Constantine and the Council of Nicea in the fourth century? Even so, no.
This is an aside, but this is not a good parallel at all, respectfully. Just on the face of it, the state is given the power of the sword. That certainly does not mean that power is always used well or even justly by the state. And it does not mean that one killing another in war is
never murder; it is
possible for one to commit murder when killing another person in a state-sanctioned war. But generally speaking, such is not the case. There is a difference between killing, in the case of a person killing under the purview of the state in a war, and murder.
Grace and peace to you.