An example for us
God wants you and me to keep one day in seven different from the other six.
God told Moses that on the seventh day (the Sabbath day) the people were not to do any work. They were to rest themselves, and also allow their servants and even their animals to rest.
God Himself rested after He had created the world. Of course, God did not need to rest, because He never gets tired, but He rested to give us a good example.
Up to the time of our Lord Jesus, people worshipped God on the Sabbath day, which is the seventh day of the week.
We have our day of rest and go to church on Sundays, the first day of the week. This change took place because the first Christians used to call Sunday, the Lord’s Day, meaning the day the Lord Jesus rose from the dead.
It was quite difficult for them to meet because many of them were not given Sunday as a day off, or they were slaves and had no free time, so they often met either very early in the morning or late at night. But it was so important for them to meet together to worship the Lord, that they made every effort to do this in each other’s houses on Sundays.