Matthew 5:13 says” 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.
People add salt to whatever they are eating for they know that the salt is a seasoning and that it will give it an extra flavor to the taste. Don’t you enjoy eating foods that have a tasty taste to them? The seasoning makes us want to eat more of it.
In this verse we have Jesus telling us that we are to be the salt of the earth we are to be the seasoning to people who we encounter each day. Salt seasons and flavors food just as Christians should enhance a favorable influence the people and society around us. We know that salt is a preservative just as Christians and the church should resist moral corruption and decay, preserving a godly influence on the culture. When Christians and the church lose these qualities they will become spiritually lukewarm, unconcerned, unresponsive, lazy a condition that suppresses or destroys the activity and power of the Holy spirit.
As a result Christians who are not season with salt will be trampled by men which means they will end up giving into the way and values of a ungoldy society which will bring destruction in the end.