After Chet HaEgel it was important for Moshe to emphasize that spirituality (as we find in observing Shabbat) is more important than concrete symbols (the Mishkan and the objects that go into it).

When Shabbat comes to an end on Saturday evening, a Havdalah ceremony is held to mark the occasion. A blessing is said over wine, a symbol of joy, then over sweet spices, to comfort the soul at ...