Do you love Jesus? He said “If you love Me, keep My Commandments”. He talked about Gentiles being grafted in. The Apostle Paul said Romans 3:31
“Do we then make void the law through faith? God forbid: yea, we establish the law.”
Some fundamental Bible teachings on the Sabbath...
There is no obligation for the New Testament believer to keep the Sabbath and will also show that the idea of a Sunday “Christian Sabbath” is also unscriptural. As mentioned, there is one time the Sabbath is mentioned after Paul began to focus on the Gentiles, “Therefore do not let anyone judge you by what you eat or drink, or with regard to a religious festival, a New Moon celebration or a Sabbath day. These are a shadow of the things that were to come; the reality, however, is found in Christ” (Colossians 2:16–17). The Jewish Sabbath was abolished at the cross where Christ “canceled the written code, with its regulations” (Colossians 2:14).
More...
https://www.gotquestions.org/Saturday-Sunday.html
Also...
NEVER COMMANDED OF THE GENTILES...
All the commands regarding the Sabbath are directed toward Israel, no other nation
The exception was “the stranger who is within your gates” - Exo 20:10
The exception was to prevent being influenced to disobey - cf. Neh 13:15-21
It was to be a sign between God and His people Israel - Exo 31:13,16-17; Eze 20:12,20
— Like circumcision, the Sabbath served as a sign between God and Israel
more.....
https://executableoutlines.com/topical_sermons/sabbath-day.html