Saturday or Sunday – Which Is the Sabbath?

The Sabbath was created by the act of rest at creation,-long before Moses ever lived. It is #4 of the 10 Commandments also in force before Moses (Moses revealed the Law to the Israelites as they were living in a pagan society for hundreds of years and had to be enlightened). Jesus kept the Sabbath as it was His custom. All the Apostles kept the Sabbath (and the other Holy Days). Jesus did not come to do away with the very Laws He instituted,-in fact He stated not one jot or title will disappear from the Law (or Word of God). He said "Think NOT that I am come to do away with the Law"...-and so they all think that He did! When the young man asked the Lord how he could gain eternal life,-he was told to keep the 10 commandments. The Book of Revelation tells us no one that doesn't keep the commandments will be in God's Kingdom period. Professing christians do not quote the Book of James the Lord's brother because he talks about the Law. They take obscure verses or out of context verses to substantiate a false doctrine of grace.
The 4th commandment is the most hated commandment! But God blesses those that HONOR Him by keeping it and it is a MARK on their forheads & hands (Mind & Work) while those that observe SUNday (Baal) have the MARK of the Beast's Image in their forheads and hands (Sabbath breaking).
The early Churches of God kept the Sabbath Day & other 7 Holy Days of God which were not done away with.
You do not honor God by taking filthy pagan days and use them to attempt to honor Him.
The whole world is deceived and will be re-educated when Christ returns. Mankind has been creating his own religions since creation. God tells us in His word how He wants us to worship Him and He will not accept anything less.
Sin is the transgression of the Law,-if there is no Law then there is no sin. People think that Jesus was some kind of rebel hippie that came to do away with His Father's harsh and cruel Laws when in fact He was the very God of the OT period,-The I AM and it is His Laws.

You are theologically ignorant Brian. For Christians in Christ we worship on Sunday.

The New Testament has ample evidence that the seventh day Sabbath is no longer a requirement.

Rom. 14:5-6, "One man regards one day above another, another regards every day alike. Let each man be fully convinced in his own mind. 6 He who observes the day, observes it for the Lord, and he who eats, does so for the Lord, for he gives thanks to God; and he who eats not, for the Lord he does not eat, and gives thanks to God."

Col. 2:16-17, "Therefore let no one act as your judge in regard to food or drink or in respect to a festival or a new moon or a Sabbath day— 17 things which are a mere shadow of what is to come; but the substance belongs to Christ."

Acts 20:7, "And on the first day of the week, when we were gathered together to break bread, Paul began talking to them, intending to depart the next day, and he prolonged his message until midnight."

1 Cor. 16:1-2, "Now concerning the collection for the saints, as I directed the churches of Galatia, so do you also. 2 On the first day of every week let each one of you put aside and save, as he may prosper, that no collections be made when I come."

Rev. 1:10-11, "I was in the Spirit on the Lord’s day, and I heard behind me a loud voice like the sound of a trumpet, 11saying, "Write in a book what you see, and send it to the seven churches: to Ephesus and to Smyrna and to Pergamum and to Thyatira and to Sardis and to Philadelphia and to Laodicea."

The New Bible Dictionary says regarding the term, ‘The Lord’s Day’ in Revelation 1:10: "This is the first extant occurrence in Christian literature of heµ kyriakeµ heµmera. The adjectival construction suggests that it was a formal designation of the church’s worship day. As such it certainly appears early in the 2nd century (Ignatius, Epistle to the Magnesians, 1. 67).

In many churches today, the term "The Lord’s Day" is used to designate Sunday, the same as it was in the second century.

We have the freedom (Rom. 14:1-12) to worship on the day that we believe we should. And, no one should judge us in regard to the day we keep. We are free in Christ, not under law (Rom. 6:14).

Originally there were 12 tribes of Israel and later Jacob (Israel) adopted Joseph's two sons,- Ephraim & Manasseh as his own thereby making 13 tribes. Ex.2:1-2 and chapter tells us Moses was born to a couple from the tribe of Levi (which later became the priestly tribe). These 12 sons of Jacob were produced by 4 different women and though having the same father had some differnt characteristics from their mothers. Those born to the son of Jacob named Judah were nicked named 'Jews'. All of Jacob's offspring are Israelites but the majority of Israelites are not Jews (only 1/13th are).
Just like Texans are Americans but not all Americans are Texans.
After the reign of King Solomon the Israelite kingdom was divided into 2 seperate Kingdoms the 10 Northern tribes called the Kingdom of Israel and the Southern Kingdom of Judah with Solomon's son as King (also the tribes of Benjamin and most of the tribe of Levi stayed with Judah).
Later in 2Chron.16:6 we see the Northern Kingdom of Israel allied with Syria at war with the Kingdom of Judah (Jews)!
Much later the Kindom of Israel was conquered by Assyria and taken as slaves and they lost identity of who they were. But God knows who they are and where they are today (the lost sheep of Israel).
The Jews never lost their identity because they kept the Sabbath.
The nation of Israel today is mis-named and should technically be called 'Judah'. When Christ returns He will reunite all of Israel.
So yes Moses was not a Jew but a Levite.

Deuteronomy 28 1 And it shall come to pass, if thou shalt hearken diligently unto the voice of Jehovah thy God, to observe to do all his commandments which I command thee this day, that Jehovah thy God will set thee on high above all the nations of the earth: 2 and all these blessings shall come upon thee, and overtake thee, if thou shalt hearken unto the voice of Jehovah thy God. 3 Blessed shalt thou be in the city, and blessed shalt thou be in the field. 4 Blessed shall be the fruit of thy body, and the fruit of thy ground, and the fruit of thy beasts, the increase of thy cattle, and the young of thy flock. 5 Blessed shall be thy basket and thy kneading-trough. 6 Blessed shalt thou be when thou comest in, and blessed shalt thou be when thou goest out. 7 Jehovah will cause thine enemies that rise up against thee to be smitten before thee: they shall come out against thee one way, and shall flee before thee seven ways. 8 Jehovah will command the blessing upon thee in thy barns, and in all that thou puttest thy hand unto; and he will bless thee in the land which Jehovah thy God giveth thee. 9 Jehovah will establish thee for a holy people unto himself, as he hath sworn unto thee; if thou shalt keep the commandments of Jehovah thy God, and walk in his ways. 10 And all the peoples of the earth shall see that thou art called by the name of Jehovah; and they shall be afraid of thee. 11 And Jehovah will make thee plenteous for good, in the fruit of thy body, and in the fruit of thy cattle, and in the fruit of thy ground, in the land which Jehovah sware unto thy fathers to give thee. 12 Jehovah will open unto thee his good treasure the heavens, to give the rain of thy land in its season, and to bless all the work of thy hand: and thou shalt lend unto many nations, and thou shalt not borrow. 13 And Jehovah will make thee the head, and not the tail; and thou shalt be above only, and thou shalt not be beneath; if thou shalt hearken unto the commandments of Jehovah thy God, which I command thee this day, to observe and to do them , 14 and shalt not turn aside from any of the words which I command you this day, to the right hand, or to the left, to go after other gods to serve them.

“This is love for God: to obey his commands. And his commands are not burdensome” (1 John 5:3). The Ten Commandments were essentially a summary of the entire Old Testament law. Nine of the Ten Commandments are clearly repeated in the New Testament (all except the command to observe the Sabbath day). Obviously, if we are loving God, we will not be worshipping false gods or bowing down before idols. If we are loving our neighbors, we will not be murdering them, lying to them, committing adultery against them, or coveting what belongs to them. The purpose of the Old Testament law is to convict people of our inability to keep the law and point us to our need for Jesus Christ as Savior (Romans 7:7-9; Galatians 3:24). The Old Testament law was never intended by God to be the universal law for all people for all of time. We are to love God and love our neighbors. If we obey those two commands faithfully, we will be upholding all that God requires of us.

You are supposing legalism, wanting others to due what is impossible. We are under the law of Christ (Galatians 6:2), which is to “love the Lord your God with all your heart and with all your soul and with all your mind…and to love your neighbor as yourself” (Matthew 22:37-39). If we obey those two commands, we will be fulfilling all that Christ requires of us: “All the Law and the Prophets hang on these two commandments” (Matthew 22:40). Now, this does not mean the Old Testament law is irrelevant today. Many of the commands in the Old Testament law fall into the categories of “loving God” and “loving your neighbor.” The Old Testament law can be a good guidepost for knowing how to love God and knowing what goes into loving your neighbor. At the same time, to say that the Old Testament law applies to Christians today is incorrect. The Old Testament law is a unit (James 2:10). Either all of it applies, or none of it applies.

You forgot to include why Jude wrote verse (4). The previous verse gives the reason. (v.3) ...exhorting you to contend earnestly for the faith which was once for all delivered unto the saints. Jude gives us a reason for defending that truth. These men were pretending to be Christian teachers. Their doctrines were damnable heresies. Just as Peter described in 2 Peter 2:1. They were supposedly teaching Christian religion, when in fact they denied the most of the fundamental doctrines of the Christian Faith.

I will not impose on you that you should observe the Sabbath on what is called the "The Lord's Day."

The 1st and 2nd century Christian fathers and their flock met on Sunday, but they didn't call it Sunday. They called it the Lord's Day. Even Ignatius, a student of John the Apostle wrote; The Epistle of Ignatius to the Magnesians 8-10 (c. 110 A.D.)
"Do not be deceived by strange doctrines or antiquated myths, since they are worthless. For if we continue to live accordance with Judaism, we admit that we have not received grace. For the most godly prophets lived in accordance with Christ Jesus. This is why they were persecuted, being inspired as they were by His grace in order that those who are disobedient might be fully convinced that there is one God who revealed Himself through Jesus Christ His Son, who is His Word which came forth from silence, who in every respect pleased Him who sent Him. If, then, those who had lived in antiquated practices came to newness of hope, no longer keeping the Sabbath but living in accordance with the Lord's day, on which our life also arose through Him and His death (which some deny), the mystery through which we came to believe, and because of which we patiently endure, in order that we might be found to be disciples of Jesus Christ, our only teacher, how can we possibly live without Him, whom even the prophets, who were His disciples in the Spirit, were expecting as their teacher? Because of this He for whom they rightly waited raised them from the dead when He came. Therefore let us not be unaware of His goodness. For if He were to imitate the way we act, we are lost. Therefore, having become His disciples, let us learn to live in accordance with Christianity. For whoever is called by any other name than this one does not belong to God. Throw out, therefore, the bad leaven, which has become stale and sour, and reach for the new leaven, which is Jesus Christ. Be salted with Him, so that none of you become rotten, for by your odor you will be examined. It is utterly absurd to profess Jesus Christ and to practice Judaism. For Christianity did not believe in Judaism, but Judaism in Christianity, in which "every tongue" believed and "was brought together" to God."

Even though the writings of those who came after John were not inspired writings. We can learn a lot about the early church and what they believed and practiced, especially in the the 1st and 2nd century.

You accuse me unrighteously, as I've never espoused anything would qualify as cheap grace. As I see everyday as the Lord's day, 24/7. We, as the body of Christ need to extend grace, where grace is needed.

There are essential Christian doctrines, and this falls under non essential ideas, not doctrine.

May God Bless you†