Here's an interesting thing. Did God create the world in 6 days then have Sunday or
a sabbath day off because he was tired.

Did God need a day of rest?
I think its a good principle to have a day of rest and meet together as a church etc
though to be honest one person's day or rest can be as busy as another person's Monday
morning! Medical staff, pastors, carers, patents, farmers, people who work on power stations
who keep the electric on 24/7, people who work in petrol stations along motorways which are
required to stay open 24/7 in the U.K. Plus numerous other examples.
Colossians 2:16-17 NLT
[16] So don't let anyone condemn you for what you eat or drink, or for not celebrating
certain holy days or new moon ceremonies or Sabbaths. [17] For these rules are only
shadows of the reality yet to come. And Christ himself is that reality.
Colossians 2:16-17 NKJV
[16] So let no one judge you in food or in drink, or regarding a festival or a new moon or
sabbaths, [17] which are a shadow of things to come, but the substance is of Christ.
John 5:17-18 NKJV
[17] But Jesus answered them, "My Father has been working until now, and I have been working."
[18] Therefore the Jews sought all the more to kill Him, because He not only broke the Sabbath,
but also said that God was His Father, making Himself equal with God.
Mark 3:3-4 NKJV
[3] And He said to the man who had the withered hand, "Step forward." [4] Then He said
to them, "Is it lawful on the Sabbath to do good or to do evil, to save life or to kill?" But they kept silent.
Mark 2:27-28 NLT
[27] Then Jesus said to them, "The Sabbath was made to meet the needs of people, and not
people to meet the requirements of the Sabbath. [28] So the Son of Man is Lord, even over
the Sabbath!"
Mark 2:27-28 NKJV
[27] And He said to them, "The Sabbath was made for man, and not man for the Sabbath.
[28] Therefore the Son of Man is also Lord of the Sabbath."