I think the guy needs further bible studies.
Christians are not required to observe a weekly sabbath.
Christians are under “the law of the Christ,” which does not include keeping the Sabbath.
(Colossians 2:16, 17)
“Therefore, do not let anyone judge you about what you eat and drink or about the observance of a festival or of the new moon or of a sabbath.
17 Those things are a shadow of the things to come, but the reality belongs to the Christ.”
God never required other people to observe a sabbath rest.
In addition, even the Jews were “released from the Law” of Moses, including the Ten Commandments, by the sacrifice of Jesus Christ.
(Romans 7:6, 7)
“But now we have been released from the Law, because we have died to that which restrained us, in order that we might be slaves in a new sense by the spirit and not in the old sense by the written code.”
7 “What, then, are we to say? Is the Law sin?”
“Certainly not! Really, I would not have come to know sin had it not been for the Law.”
(Romans 10:4)
“For Christ is the end of the Law, so that everyone exercising faith may have righteousness.
(Galatians 3:24, 25)
“So the Law became our guardian leading to Christ,a so that we might be declared righteous through faith.b 25 But now that the faith has arrived, we are no longer under a guardian.”
Rather than adhere to the Law of Moses, Christians follow the superior law of love.
(Hebrews 8:13)
“In his saying “a new covenant, he has made the former one obsolete.
Now what is obsolete and growing old is near to vanishing away.”
“Therefore, do not let anyone judge you about what you eat and drink or about the observance of a festival or of the new moon or of a SABBATH.
Colossians 2:16, 17
How hard can this be?