הַמִּזְבֵּ֡חַ עֵ֣ץ שָׁלוֹשׁ֩ אַמּ֨וֹת גָּבֹ֜הַּ וְאָרְכּ֣וֹ שְׁתַּֽיִם־אַמּ֗וֹת וּמִקְצֹֽעוֹתָיו֙ ל֔וֹ וְאָרְכּ֥וֹ וְקִֽירֹתָ֖יו עֵ֑ץ וַיְדַבֵּ֣ר אֵלַ֔י זֶ֚ה הַשֻּׁלְחָ֔ן אֲשֶׁ֖ר לִפְנֵ֥י יְהוָֽה׃
The altar, three cubits high, and the length thereof two cubits, was of wood, and so the corners thereof; the length thereof, and the walls thereof, were also of wood; and he said unto me: ‘This is the table that is before the LORD.’
Sha'arei Kedusha
Now, so that your table will be an altar that atones for your sins, eat little and thereby weaken the power of the external husk of the food that nourishes you, and while eating, occupy yourself in Torah by learning a Mishnah or a Psalm. Through this, your table will be declared to be an altar to HaShem-יהו"ה, blessed is He,268Zohar II 153b as it states,269Ezekiel 41:22 “This table is in the presence of HaShem-יהו"ה.” This weakens your evil inclination, whereas your intellectual soul becomes strengthened and nourished by your Torah study.