Halakhah zu Schemot 25:28

The first reason is because the food on a table is the cause of the sustenance of the body, which is composed of four elements. If one were missing or were more dominant than its fellows, a person would sicken immediately and be unable to eat or drink, or serve the Lord. The heart would be terrified and the mind afraid at the overturning of the equilibrium of the organs, which are the vessel of the soul. The soul cannot act without its vessel. If so, the table then is the foundation of the four elements, and they keep the body standing just as the four poles in the four rings used to hold up the table [in the Tabernacle], which is why Scripture said, “By these [the poles] the table shall be carried.”³⁶Ex. 25:28.