ויכל אלהים ביום השביעי. בתחלת היום השביעי שהוא הרגע בלתי מתחלק אשר הוא ראשית לזמן העתיד ואינו חלק ממנו כאמרם ז"ל נכנס בו כחוט השערה: ויכל אלוקים ביום השביעי, at the beginning of the seventh “day,” a moment which is indivisible from the time frame which follows, so that both the six previous “days” were an entity in themselves, and the seventh day was a totally self-contained entity. Our sages in Bereshit Rabbah 10,9 describe G’d as knowing the precise moment between the sixth and seventh day and describe it as “thin as a hair’s breadth.” [I believe the problem confronting the sages was the statement that G’d had completed all His work in the six days, and yet the Torah speaks of Him completing, ויכל, His work on the ”seventh” day, something that appears to be a contradiction to the former statement. Ed.]
וישבות ביום השביעי. כל אותו היום נבדל מששת הימים הראשונים בענין השביתה: וישבות ביום השביעי, G’d’s inactivity on the seventh day set it apart from the previous six days.