The Christian Sunday is not the Jewish Sabbath.
It is not even something we use to judge others,
or prove that we are more righteous.
Many people believe in Jesus on the one hand,
and do the Law on the other hand.
They are even afraid of breaking the Law.
These people rest on Sunday, but not rest in Christ.
My friends, once we enter the new covenant,
whatever we do, it is in Christ.
Our Sabbath, our rest is in Christ, 7 days a week.
Sunday is a day sanctified and used for worshiping our Lord.