The word Sabbath simply means” rest” with no other meaning added to it.
We are not to add to a word(singular) in that way so we can keep the commandments(plural). It can change the context as a edit coming from men and therefore change the authors intent.. .
Deuteronomy 4:2 Ye shall not add unto the word which I command you, neither shall ye diminish ought from it, that ye may keep the commandments of the LORD your God which I command you.
Because God chose to rest on the seventh, the word Sabbath does not equal a time sensitive word Saturday, the last day .
The phrase "last day" is used as to the beginning of eternal life, the new creation . It will be the end of life as we know it.The beginning of the new, appropriated by the first day when he set let there be light .
The Hebrews and Greeks did not have the word week meaning seven days or a division of days named Monday, Tues ...etc. But rather called it the first, second and third day e.t.c.
The word Sabbath ...means rest. And is not a time sensitive word. Somehow or other the paraphrases called it a week as a miss represented transliteration. . .
So if we look at that passage in Isaiah 58, we look at Matt 12, and a number of other verses the word shows us it is truly a day to do His will not our own.
Yes it is not a day we are to do the pleasure of our will apart from the will of God and call that suffering . It’s a ceremonial law as a shadow pointing toward the eternal rest we will receive in our new incorruptible bodies. A day when we can work to bring the gospel into the world .when we don’t have to do the work needed to feed ourselves.
The Jews according to an oral tradition as the things of men had turned it into a day they could feel proud of their flesh and set up all kind of provisions .Like eating three times on the Sabbath and restricting the distance a person could walk or lighting a fire. and calling it Kosher.
One such person bragged he fasted twice on the Sabbath(singular) a day of rest .and not three Kosher meals which was the tradition at that time. Not week, which means 7 days .Again the word Sabbath with no other meaning added is not a time sensitive word.
Now Judaism and ancient pharisees made it a day were one basically sits on their hands all day. Yah does not want this, I have been shown in the word and in my life, the Sabbath is for His will. While the Feast days are about the works of Messiah, and training tools for His will.
I would agree we do the meat of His will when and if we offer the gospel of Christ as food for those who know not Christ those with a afflicted soul . In a living hope that perhaps He will grow the seed (gospel) that we can plant or another could water with the word.
It’s the kind of fast that cast out the lying spirits as the kind of food the disciples knew not of and therefore could not cast out the lying spirits .
We draw out our soul
as if it was bread (manna)to feed those who hunger and thirst for a righteousness not of their own.
Isa 58:10 And if thou draw out “thy soul” to the hungry, and satisfy the afflicted soul; then shall thy light rise in obscurity, and thy darkness be as the noon day:
Sabbath is a re-set. A day in which nothing worldly matters. All the hustle and bustle of the week can wear one down, that is why many "cut loose" come week end time. Yah created us and knows EXACTLY how we operate. So He gave us day of refreshment. Now the things I am about to mention are not the only things I believe one can do on Sabbath, but are a few things I personally find Sabbath worthy.
I would agree, but the new era of Sabbaths are moved to the first day of the week , the day of creation. The day He said let there be light, as the light of the gospel in respect to children of light... those led by the Spirit of Christ indwelling them as sons of God..