What would the purpose of salt be if it wasn't salty? It would just be white stuff on food if it had no salty taste. What about a lamp without light? If we waste our time on silly unimportant things, then what would our purpose be? We need to be the salt and light of the world by telling others about the truth of God's love. Another way to be the salt and light of the world is to be kind to others and show them the Christian values by being kind to others and having a positive attitude. I mean seriously in school you can't be smart as a cookie if you have a crummy attitude. So here's to being the salt and light of the world.