Keeping Kosher is a mitzvah, a divine "commandment" and "connection." We eat Kosher because G‑d commanded us to, and by fulfilling the divine will we connect to G‑d.
Kosher can thus be seen as "spiritual nutrition": just as there are foods that are good for the body and foods that are harmful, there are foods that nourish the Jewish soul and foods that adversely affect it.
Kosher Resources
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