Despite the fact that illness is part of human experience, we do not succeed in becoming accustomed to it, not only because it is sometimes truly burdensome and grave, but also essentially because we are made for life, for a full life. Our "internal instinct" rightly makes us think of God as fullness of life indeed, as eternal and perfect Life. When we are tried by evil and our prayers seem to be in vain, then doubt besets us and we ask ourselves in anguish: what is God's will? We find the answer to this very question in the Gospel. For example, in today's passage we read that Jesus "healed many who were sick with various diseases, and cast out many demons" (Mk 1: 34); in another passage from St Matthew it says that Jesus "went about all Galilee, teaching in their synagogues and preaching the Gospel of the Kingdom and healing every disease and every infirmity among the people" (Mt 4: 23). Jesus leaves no room for doubt: God whose Face he himself revealed is the God of life, who frees us from every evil. The signs of his power of love are the healings he performed. He thus shows that the Kingdom of God is close at hand by restoring men and women to their full spiritual and physical integrity. I maintain that these cures are signs: they are not complete in themselves but guide us towards Christ's message, they guide us towards God and make us understand that man's truest and deepest illness is the absence of God, who is the source of truth and love. Only reconciliation with God can give us true healing, true life, because a life without love and without truth would not be life. The Kingdom of God is precisely the presence of truth and love and thus is healing in the depths of our being. One therefore understands why his preaching and the cures he works always go together: in fact, they form one message of hope and salvation.
[Pope Benedict, Angelus, 8 February 2009]