Kabbalah su Esodo 20:8

The letter Zayin entered and said to Him, Master of the Universe, may it please You to create the world with me. Because with my help, Your children shall keep the Shabbat, as it is written, "Remember the Shabbat day, to keep it holy" (Ex. 20:8) ["remember" in Hebrew is zakhor] He replied: I will not create the world with you, because you represent war, a sharp pointed sword and a spear! ["sword" in Hebrew is spelled and pronounced the same way the letter name is.] and so you are like the letter Nun! It immediately left His presence.

Specifically regarding Shabbat it is important to be cautious since it is very related to the sign of the brit, as Rabbi Shimon said in the Zohar in Yitro: 527. “Remember the Shabbat day, to keep it holy” (Shemot 20:8). This is the secret of the Holy Covenant, WHICH IS YESOD, for in this Covenant lie all the sources of the limbs of the body, and it comprises everything. In the same manner, the Shabbat day includes all the Torah, all of its secrets originate in it. And he who keeps the Shabbat is considered as one who keeps the whole Torah.