When Jesus says that his disciples are salt from the earth, He certainly has in mind some properties of this chemical element, such as: salt serves to give flavor. For this, it needs to be mixed with the food to be consumed. A disciple must do the same: first of all, he must meet the other, mingle with people, be among them, like Jesus himself, and there, be for them the possibility of a new life, a new life. world, a new hope, an orientation, a sense of life. The disciple makes it possible for the world to find its course, its horizon and its dignity.
2. A second property of salt is conservation. The ancients salted meats and vegetables in order to last longer. In this sense, the Old Testament also conceived it in the establishment of a Covenant with God (“salt covenant”: Num. 18.19), thus marking an indestructible commitment to the Lord. The disciples must be those who will not allow human beings to deteriorate; their presence is a sign of continuity in life, hope and love, thus strengthening the dignity of creation. Being "salt", the disciples will not allow the extinction of humanity. Furthermore, they have a covenant established through Jesus Christ, in which both sides (God and the disciples) are committed to the establishment of justice, freedom, peace and life.
3. A third property is that of a way of disappearing salt, while food, in turn, appears more pleasantly and tastily. In this way, the disciple, like Jesus, empties himself, makes his life a gift, and gives himself totally for the good of the other, for the salvation of the world. He should not seek honors, fame, social status, applause, but simply the joy of giving meaning, support and visibility to those who were in darkness, distant from God, themselves, nature and other brothers.