Genesis 2:2

And on the seventh day God ended his work.

The six days, or periods, were fully occupied with the work of creation. During them the creative activity did not cease, but on the seventh day God ended his work. Some have corrected the text so as to read, "ended on the sixth day," or, "God had ended his work," but these are human amendments of the divine record, which tells us that the work ended on the seventh day. Having ended it he rested, or ceased from the work of creation, on the seventh day.