"You are the salt of the earth. But if the salt loses its saltiness, how can it be made salty again? It is no longer good for anything, except to be thrown out and trampled by men." — Matthew 5:16
Jesus often used natural objects in His teachings such as birds of the air, flowers of the field, mountains, wheat fields, etc. One of the figures of speech that speaks about our role in the world is "salt of the earth," from the Sermon on the Mount.
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