This is also the difference between the days of the week and the day of Shabbos. During the weekdays a person’s Avodah involves matters of the world, the thirty-nine creative Melochos of sowing and ploughing etc, whose primary purpose in this world was the building of the Mishkon, and out of those tasks these works were available to be used also within the mundane realm. However, now, after they developed into mundane tasks they no longer retained their holiness, as Mishkon tasks and are now mundane worldly tasks, from the Hebrew word for ‘world’ which meaning הֶﬠְלֵם וְהֶסְתֵּר comes from the words עוֹלָם is ‘concealed and covered up’, therefore a person needs to impress upon oneself that his engagement with mundane tasks should be strictly as the Mishneh states: “All of your actions וְכָל מַﬠֲשֶׂיႫ יִהְיוּ לְשֵׁם שָׁמָיִם should be for the sake of Heaven” and as the Possuk states: וֵּהﬠ דָႫְרָכֶידּ ְכָלבּ “Know Him in all your ways”, (in accordance with the fact that the prime purpose of these tasks was for the building of the Mishkon) to the extent that as a result of contemplating the Divine life that vitalises the world etc. one can come to love HaShem in a manner of לָםוֹאַהֲבַת ע [everlasting love] as mentioned earlier.
