He says that because it is in you, us to be good and to resist, prevent evil just like salt prevents infestation and decay. We promote societal health through acts of virtue (charity). We become an agent of immortality.
“But if salt loses its taste…it is no longer good for anything.” [St. Matthew, 5:13-16]
If we don’t do good, we add to the problem that Jesus came to fight. We advance societal decay through acts of vice (viciousness). We become an agent of mortality.
This is precisely why we need Jesus in our souls, to keep us “salted” against evil, and “salty” like medicine for each other.
This brings out the reality of the promise which Jesus made to us, and that many do not accept:
“Whoever eats my flesh and drinks my blood has eternal life, and I will raise him on the last day.” [St. John, 6:54]
For if we are really salted by our Savior, His own spiritual flesh, we can not die. We will live joyfully through Him, with Him, and in Him, in the unity of the Holy Spirit.
En-salt me with purity, Lord Jesus, in the banquet of Your sacrificial Love, the Eucharist. Thank you for Your Life which is our life, in and through Your Life.