The Basics of Judaism: Basic Values and Morality: The Salt of a Covenant:
What is the meaning of "salt" in connection with a covenant?
Using salt (or bread and salt) to "seal" a treaty or agreement was an
ancient practice in many cultures. Since salt is used to preserve food,
associating it with a covenant implies that the covenant will be
long-lasting and will retain its freshness. And just as salt is used to
flavor food, our participation in the covenant improves us spiritually.
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