Six days do your work, but on the seventh day do not work... Exodus 23:12
For six days, work is to be done, but the seventh day shall be your holy day, a Sabbath of rest to the LORD. Exodus 35:2
There are six days when you may work, but the seventh day is a Sabbath of rest, a day of sacred assembly. You are not to do any work; wherever you live, it is a Sabbath to the LORD. Leviticus 23:3
There remains, then, a Sabbath-rest for the people of God; for anyone who enters God's rest also rests from his own work, just as God did from his. Let us, therefore, make every effort to enter that rest, so that no one will fall by following their example of disobedience. Hebrews 4:9-11
So, remember to take a day of rest. God commands it and we need it!