Chazal (the Sages) say that by performing mitzvos, we spiritually bind ourselves with Hashem. There is a resolvable contradiction between "eating" (physical) and "Shabbos" (spiritual). The problems of getting the body to understand Shabbos. With the proper hachana (preparation) even the neshama (soul) can delight in food and drink. The need for diligence in understanding preparation for Shabbos. The true objective of eating on Shabbos is based on preparation.