Hello Norbet.
I disagree with your entire post.
You could be aware that anti Christ apologists for Islam like to use the argument, show me where Jesus says He is God and should be worshiped. By that they mean and only want to hear a literal quote from the scriptures where Jesus says "I am God". You won't find it.
Jesus told people who He was.
John 5:18
For this reason therefore the Jews were seeking all the more to kill Him, because He not only was breaking the Sabbath, but also was calling God His own Father, making Himself equal with God.
Jesus proclaimed His equality with His Father.
Jesus also clearly stated that anyone who looked upon Him, was actually looking at the Father.
John 14:9
Jesus said to him, “Have I been so long with you, and yet you have not come to know Me, Philip? He who has seen Me has seen the Father; how can you say, ‘Show us the Father’?
No one can make the claim that Jesus did not assert His own divinity. Jesus never corrected anyone who worshiped Him.
Will you find a commandment in the NT that requires to keep the seventh day? No, but at the same time you will not find a commandment to stop keeping the seventh day either.
Are you referring to the Jews or the Gentiles?
The Jews were under the law, the Jews referred to the themselves as the circumcised.
Hence, the Jews under law were bound to keep the Sabbath. The Gentiles were not under the law, the Gentiles were called the uncircumcised. Thus the Gentiles never had to honor the Sabbath.
The answer is not going to be found in the manner it is being asked. What you will find are the actions by those who we hear from which are recorded for us in the NT. It was Jesus' custom Luke 4:16, Paul preached the gospel on that day Acts 18:4 and the women rested on it while Jesus' was in the grave Luke 23:56. I believe a Christian has the freedom to worship on the seventh day. I see the instruction mentioned in Romans 14:5 as relevant in this issue.
Any attempt to obey the law is a work of the flesh.
Galatians 3
5 So then, does He who provides you with the Spirit and works miracles among you, do it by the works of the Law, or by hearing with faith?
A Christian is justified through believing in Jesus, a Christian is not justified by the self effort of legal observance.
If a body of Christians want to worship on the seventh day who is any other Christian to decide for them not to do this.
The apostle Paul said many times that we are not under the law.
Romans 6:14
For sin shall not be master over you,
for you are not under law but under grace.