Now, if you admit there are moral principles in other parts of the law besides the 10, let's reverse the question.
Why could there not be a ceremonial law IN the 10?
Sir .. the answer is simple ...NO
Tha Sabbath is not a temporary, ceremonial day ...its a COMMANDMENT of GOD himself ... who by the way is the very JESUS Christ whom you worship...
ALL the 10 Commandments were GIVEN to ISrael, please dont try and make as if you can pick and choose what suits you ..
I want you to know that ISRAEL is ONE WHO WRESTLES WITH GOD, and prevailes. That is, those who choose GOD/Jesus
So thats ultimately those who are called by HIS NAME ... NOT those of and by relation nor geographical position ... its about the HEART of MAN ACCEPTING THE TRUTH OF GOD ALMIGHTY ...
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The Sabbath is a memorial. A memorial is not an inherently moral principle.
Sir, I realy wonder if you would have said that on MOUNT SINAE ...
Sir, this is a COMMANDMENT OF GOD TO KEEP/REMEMBER/OBSERVE THE HOLY SABBATH DAY ... Do you not go to church on sunday in the hope that it is pleasing and obediant to GOD?
As you say, isnt then SUNDAY observance...a memorial to the ressurection? But has GOD/JESUS ever told you to observe Sunday..?
You have not explained how the Sabbath is "moral" other than to say it is in the 10. But the ten are no where stated to be all "moral" laws.
Your opinion and rationalisation
And even among the 10 commandments God singled out one commandment, the fourth, for a special purpose. He singles it out as a SIGN between Israel and God.
Exo 31:13 "You are to speak to the people of Israel and say, 'Above all you shall keep my Sabbaths, for this is a sign between me and you throughout your generations, that you may know that I, the LORD, sanctify you.
Exo 31:14 You shall keep the Sabbath, because it is holy for you. Everyone who profanes it shall be put to death. Whoever does any work on it, that soul shall be cut off from among his people.
Exo 31:15 Six days shall work be done, but the seventh day is a Sabbath of solemn rest, holy to the LORD. Whoever does any work on the Sabbath day shall be put to death.
Exo 31:16 Therefore the people of Israel shall keep the Sabbath, observing the Sabbath throughout their generations, as a covenant forever.
Exo 31:17 It is a sign forever between me and the people of Israel that in six days the LORD made heaven and earth, and on the seventh day he rested and was refreshed.'"
Exo 31:18 And he gave to Moses, when he had finished speaking with him on Mount Sinai, the two tablets of the testimony, tablets of stone, written with the finger of God.
In the middle of universally recognized moral regulations there is a sign with Israel that is a memorial and a covenant between God and the people of Israel. You have not explained how this "sign" and this "covenant" is a moral regulation.
I like how you say ...regulation other wel meaning christians say "Are we still OBLIGATED to keep the 10 commandments ...but anyway ...
Mate, I suggest you go get your Bible, go to you room, sit with a notepad and read the 10 commandments ...read each of the TEN and while you do that, I want you to reflect on each COMMANDMENT and seek the Lord to give you understanding as to why he commmanded US to obey them ...
Jesus only ever claims to have ONE HOLY Day, and that is the SABBATH Day
Mark 2:28