salt of the earth

noun

1. an individual or group considered as representative of the best or noblest elements of society.

Basic, fundamental goodness; the phrase can be used to describe any simple, good person: “I like Mary: she’s reliable, trustworthy, and straightforward; she’s the salt of the Earth.” In the Sermon on the Mount, Jesus tells his followers, who are mainly fishermen and other simple people, “Ye are the salt of the Earth.”