Today the Gospel makes a strong appeal to us to be witnesses of Christ. And it invites us to do so in two ways that seem, at first glance, contradictory: as salt and as light.

Salt is not seen, but it is noticed; it adds flavor, it can be tasted. There are many people who “do not draw attention to themselves,” because they are like “little ants” who never stop working and doing good. In their presence, one can savor peace, serenity, and joy. They have —as people like to say nowadays— “good vibes.”

Light cannot be hidden. There are people who “can be seen from far away”: Saint Teresa of Calcutta, the Pope, the parish priest of a small town. They hold important positions because of their natural leadership or their specific ministry. They are “set on the lampstand.” As today’s Gospel says, “on the top of a hill” or “on a lampstand” (cf. Mt 5:14–15).

All of us are called to be salt and light. Jesus Himself was “salt” during thirty years of hidden life in Nazareth. It is said that Saint Aloysius Gonzaga, while playing, was once asked what he would do if he knew that in a few moments he would have to die, and he replied: “I would go on playing.” He would go on living the normal life of every day, making life pleasant for his companions at play.

There are moments when we are called to be “light” in the world. We become that light most clearly when we remain faithful during difficult or uncomfortable situations. The martyrs are powerful examples of this, because their faith shone brightest when they were suffering. Even today, in some environments, simply going to Mass can bring ridicule or criticism. In those situations, quietly choosing to practice your faith is already a way of being “light.” Light is always noticeable — even a small light. A tiny flame can brighten an entire dark room. In the same way, small acts of faith can make a real difference in a world that often feels dark.

Let us pray for one another to the Lord, that we may always know how to be salt, and that we may know how to be light when it is necessary to be so. May our daily conduct be such that, seeing our good works, people may give glory to our Father in heaven (cf. Mt 5:16).