You are the light of the world.” These are very powerful and empowering words. His followers—then and now—are capable of changing the whole world—then and now. He knew that the only way anyone would know Christ would be through the words and deeds of those who would continue His work after He was gone.
His words apply to us now as much as to those who listened to Him then. “Let your light shine. Practice your righteousness before others “so that they may see your good works and give glory to your Father in heaven.”
He didn’t tell us to become salt or to become light. As citizens of the Kingdom, through the covenant of our baptism, we are salt, and we are light. As the salt of the Earth, we provide zest and flavor to an otherwise bland and tasteless world. As the light of the world, we provide luminosity and radiance in a realm governed by darkness that fails to comprehend the light.
This is what it means to be in the world, but not of the world. As a people set apart, Christians themselves are a gift to the world.