Finding our 'sabbatismos' rest in Christ does not mean that Jesus became the sabbath day and is the sabbath day. Hebrews 4:9-10 presents Jesus as the fulfillment of the sabbath rest. So, there remains a sabbath rest for the people of God. For whoever enters God's rest also rests from his own work, just as God did from His. This signifies that through Christ, believers can experience a spiritual rest that transcends the physical rest through the observance of a day. While the Old Testament laws served as a foreshadowing of Christ's ultimate reality, the substance and fulfillment of spiritual life is found in Christ.
Hebrews 4:10 says the one who has entered His rest has himself also rested from his works, as God did from His. Believers have entered in God’s rest through Jesus as God ceased or rested from His works in the seventh day of creation. God's ultimate, true rest did not come through Joshua or Moses, but through Jesus Christ. Joshua led Israel into the promised land, which was merely the earthly rest which was but a shadow of what was involved in the heavenly rest. The rest in Christ that God offers is spiritual and is superior to that which Joshua obtained. Israel's earthly rest was filled with conflict and attacks from their enemies and the daily cycle of work.
Although for centuries the Jews had found their physical rest in a day, the New Covenant takes the focus off the shadows of the Old Testament signs and rituals and reveals their spiritual substance -- the fulfillment/reality—in the person of Jesus Christ. (Colossians 2:16-17) Christians find their "sabbatismos" rest in Jesus Christ and not in law keeping.
In Colossians 2:16-17, we read that these are a shadow of things to come, but the substance belongs to Christ. The Colossian church faced pressure from folks who promoted Jewish legalism as a means to achieve spiritual fulfillment. These individuals likely insisted on strict adherence to dietary laws, observance of festivals, new moon celebrations and sabbath keeping. Jesus offers believers rest from their labors and reconciliation with God, moving beyond the old covenant of law to a new covenant of spiritual rest in Christ.
Do we only rest in Jesus once a week? NO
Jesus is Lord of the sabbath not a fulfillment of it.
No Bible verse states that Jesus is the Sabbath.
Because Jesus gives us rest, freedom, salvation from sin does not mean Jesus has replaced the literal 24 hour sabbath rest that was made holy at creation.
He said it was made for man and that He is Lord of it. He did not say he became the sabbath.
I agree that equating SHABBAT with Jesus Himself is a questionable use of typology. However, the general truth about entering spiritual rest through Messiah is a well-known application of the typology. As to which day Christians (under the New Covenant) MUST worship I do not see any command in the NT.
Christians from the earliest centuries certainly did not believe this. Rather, the believed that the RESURRECTION OF CHRIST on the FIRST day of the week reset all OUR worship priorities and expectations. Now we do not look back upon the creation day but forward to the Second Advent. Passages such as Acts 20:7, 1 Corinthians 16:2, Colossians 2:16-17, and Revelation 1:10 indicate that, even during New Testament times, Sabbath-keeping was no longer considered binding and that Christians worshiped on "The Lord’s Day," (Sunday), instead.
As Paul said:
5 One person regards a certain day above the others, while someone else considers every day alike. Each one should be fully convinced in his own mind. 6He who observes a special day does so to the Lord; he who eats does so to the Lord, for he gives thanks to God; and he who abstains does so to the Lord and gives thanks to God.… (Romans 14:5)
Whenever I attend Messianic congregation, I worship when they did. When i am a member of non-Messianic Church I worship on the Day they do. To those who insist that refusing to rest on Shabbat is a SIN, I refer not only to Paul but to the historic practices of early Christians.
One of the earliest post-Biblical references to Church beliefs and practices was the so-called Didache (from the Greek word διδαχη or "teaching"). This was an abbrieviation of the longer title the “Teachings of the Lord (from or through) the Twelve Apostles (to or for) the Nations.” The Didache was witten very early - somewhere between the First and Sscond Century. It outlined the basic doctrines and practices of the Early Church. Significanly, it reveals that their Day of Worship was no longer Shabbat but the day we call "Sunday"