'Seventh' in the Bible
But the seventh day is a Sabbath to the Lord your God; on that day do no work, you or your son or your daughter, or your man-servant or your woman-servant, or your ox or your ass or any of your cattle, or the man from a strange country who is living among you; so that your man-servant and your woman-servant may have rest as well as you.
And see that there is no evil thought in your heart, moving you to say to yourself, The seventh year, the year of forgiveness is near; and so looking coldly on your poor countryman you give him nothing; and he will make an outcry to the Lord against you, and it will be judged as sin in you.
If one of your countrymen, a Hebrew man or woman, becomes your servant for a price and does work for you six years, in the seventh year let him go free.
For six days let your food be unleavened bread; and on the seventh day there is to be a holy meeting to the Lord your God; no work is to be done.