The Lord's Supper, as it is called, was a Seder. It is a moveable feast, and not only the first day of the week, or Yom Rishon.
Meditate on this if it is necessary. As for whether it is a command or not, out of utter respect I cannot say it is simply a suggestion from God.
there’s this creation in scripture
“In the beginning God created the heaven and the earth.”
Genesis 1:1 KJV
the sabbath in the ot corresponds to this creation and testsment which followed so as an example of what I mean
“
In the beginning God created the heaven and the earth.”
“Thus the heavens and the earth were finished,
and all the host of them. And
on the seventh day God ended his work which he had made; and
he rested on the seventh day from all his work which he had made. And God
blessed the seventh day, and sanctified it: because that in it he had rested from all his work which God created and made.”
Genesis 2:1-3
he rested from the creation of heaven and earth and so he blessed the seventh day
later in the Bible he begins foretelling a new thing that he’s working on
“For, behold, I create new heavens and a new earth: and the former shall not be remembered, nor come into mind.”
Isaiah 65:17 KJV
“Thou hast heard, see all this; and will not ye declare it?
I have shewed thee new things from this time, even hidden things, and thou didst not know them.
They are created now, and not from the beginning; ( see he’s telling of s new thing he’s beginning to do ) even before the day when thou heardest them not; lest thou shouldest say, Behold, I knew them.
Hearken unto me, O Jacob and Israel, my called; I am he; I am the first, I also am the last. Mine hand also hath laid the foundation of the earth, and my right hand hath spanned the heavens: when I call unto them, they stand up together.
Come ye near unto me, hear ye this; I have not spoken in secret from the beginning; from the time that it was, there am I: and now the Lord GOD, and his Spirit, hath sent me. Thus saith the LORD, thy Redeemer, the Holy One of Israel; I am the LORD thy God which teacheth thee to profit, which leadeth thee by the way that thou shouldest go.”
Isaiah 48:6-7, 12-13, 16-17 KJV
He’s saying the first creation which was given a covenant law came to this
“The earth also is defiled under the inhabitants thereof; because they have transgressed the laws, changed the ordinance, broken the everlasting covenant. Therefore hath the curse devoured the earth, and they that dwell therein are desolate: therefore the inhabitants of the earth are burned, and few men left. Fear, and the pit, and the snare, are upon thee, O inhabitant of the earth. The earth is utterly broken down, the earth is clean dissolved, the earth is moved exceedingly. The earth shall reel to and fro like a drunkard, and shall be removed like a cottage; and the transgression thereof shall be heavy upon it; and it shall fall, and not rise again.”
Isaiah 24:5-6, 17, 19-20
and so he’s foretelling the end of the first creation he made and rested on the seventh day he’s saying that one is going to be destroyed but he’s also offering a new covenant tbat will save people of all nations from this coming end ( it’s as the time when Noah was told the earth eas going to be destroyed so have Christian’s been told the same thing ) the gospel can save us from the end of creation and promises us a new and better one
“Nevertheless we, according to his promise, look for new heavens and a new earth, wherein dwelleth righteousness.”
2 Peter 3:13 KJV
the reason I’m talking this , my point is the seventh day sabbath commandment corresponds to the first creation Christian’s are to live as those of the new creation made of Christs promises of faith
remember why God made the seventh day holy ?
“because that in it he had rested from all his work which God created and made.”
that creation is cursed to an end and then you hear Jesus in the gospel who as a man does good works on a sabbath and is despised for it by the letter of the law and it’s keepers
“And therefore did the Jews
persecute Jesus, and sought to slay him, because he had done these things on the sabbath day.
But
Jesus answered them, My Father worketh hitherto, and I work. ( see how the lord isn’t resting from the first creation still ? But is working on Christ on the other new one ? So Jesus isn’t tied down by a sabbath rule based on the creation that’s going to end in fire )
Therefore the Jews sought the more to kill him, because he
not only had broken the sabbath, but said also that God was his Father, making himself equal with God.
Then answered Jesus and said unto them,
Verily, verily, I say unto you, The Son can do nothing of himself, but what he seeth the Father do: for what things soever he doeth, these also doeth the Son likewise. For the
Father loveth the
Son, and sheweth him
all things that himself doeth: and he will shew him greater works than these, that ye may marvel.
For as the
Father raiseth up the dead, and quickeneth them; even so
the Son quickeneth whom he will. For the
Father judgeth no man, but hath
committed all judgment unto the Son:
Verily, verily, I say unto you,
He that heareth my word, and believeth on him that sent me, hath everlasting life, and shall not come into condemnation; but is passed from death unto life.”
John 5:16-22, 24 KJV
that’s the New Testament law it corresponds to the new creation in Christ , created new people in Christ who dont need to keep a single day holy above the others because they themselves are called to follow after holiness every day everyday is the lords day to a Christian remembering where he is everyday
“What? know ye not that your body is the temple of the Holy Ghost which is in you, which ye have of God, and ye are not your own? For ye are bought with a price: therefore glorify God in your body, and in your spirit, which are God's.”
1 Corinthians 6:19-20 KJV
everything is new there’s no earthly man made temple the temple is the believers on earth and wherever they are
There’s no high priest on earth that intercedes like in the ot , he’s in heaven on the throne of his kingdom revealed as the right hand of God.
“Now of the
things which we have spoken this is the sum: We have such an high priest, who is set on the right hand of the throne of the Majesty in the heavens; a minister of the sanctuary, and of the true tabernacle, which
the Lord pitched,
and
not man.”
Hebrews 8:1-2 KJV
“Seeing then that we have
a great high priest, that is passed into the heavens, Jesus the Son of God, let us hold fast our profession.”
Hebrews 4:14 KJV
There’s nothing wrong with a man resting day a week or anything it’s actually healthy to get rest after working
but resting a day a week isn’t going To somehow I’m press holiness on the lord is the thing . When we learn to do good consistently on any and every day we’re given and not do evil consistently while we pass through this world is what really matters the ot can’t save us it can help us learn but when the gospel comes it’s our testament being given
it’s good to observe a day to the lord it’s better if it is today we observe to him , and let that be true of every day