See that sabbath day as the last day which God rested. When we see that as the day which was assumed as women supposed to rest too, with the creation of God, God blessed and satisfied the seven day since he not surpassed.
Also as we saw the sabbath is that's so consistent and described as seven day. So in the ten commandments God commanded his people to revere the sabbath day and keep it holy.
When we see the babika passing and placing the six days of labor and seven days for the rest, Jesus himself observed the sabbath and thought that it is true purpose, emphasizing that it was made for humanity and benefits of everything. So we must keep the sabbath day holy and very very organized.