The Gospel [...] presents Jesus healing 10 lepers, of whom only one, a Samaritan and therefore a foreigner, returned to thank him (cf. Lk 17: 11-19). The Lord said to him: "Rise and go your way; your faith has made you well" (Lk 17: 19). This Gospel passage invites us to a twofold reflection. It first evokes two levels of healing: one, more superficial, concerns the body. The other deeper level touches the innermost depths of the person, what the Bible calls "the heart", and from there spreads to the whole of a person's life. Complete and radical healing is "salvation". By making a distinction between "health" and "salvation", even ordinary language helps us to understand that salvation is far more than health: indeed, it is new, full and definitive life. Furthermore, Jesus here, as in other circumstances, says the words: "Your faith has made you whole". It is faith that saves human beings, re-establishing them in their profound relationship with God, themselves and others; and faith is expressed in gratitude. Those who, like the healed Samaritan, know how to say "thank you", show that they do not consider everything as their due but as a gift that comes ultimately from God, even when it arrives through men and women or through nature. Faith thus entails the opening of the person to the Lord's grace; it means recognizing that everything is a gift, everything is grace. What a treasure is hidden in two small words: "thank you"!
Jesus healed 10 people sick with leprosy, a disease in those times considered a "contagious impurity" that required ritual cleansing (cf. Lv 14: 1-37). Indeed, the "leprosy" that truly disfigures the human being and society is sin; it is pride and selfishness that spawn indifference, hatred and violence in the human soul. No one, save God who is Love, can heal this leprosy of the spirit which scars the face of humanity. By opening his heart to God, the person who converts is inwardly healed from evil.
"Repent, and believe in the Gospel" (Mk 1: 15). Jesus began his public life with this invitation that continues to resonate in the Church. [...]
Let us ask Our Lady for the gift of true conversion for all Christians, so that they may proclaim and witness consistently and faithfully to the perennial message of the Gospel, which points out to humanity the path of authentic peace.
[Pope Benedict, Angelus 14 October 2007]