Salt sustains life. Your organs function because of Electrolytes (Sodium, Calcium, and Potassium) in your body. Salt also is a preservative used to keep food from spoiling. Finally, salt signifies faithfulness. We are told in this verse that we are the salt of the earth…but what did Jesus mean when He said this? We only have to look to Him for clarification. Jesus sustains life…He preserves life…and He is faithful to His promises to us. So when He tells us that we are the salt of the earth, He is directing us to represent Him to others through the Gospel Message. In other words, we are to be His ambassadors to the world.