The mystery of suffering seems to blur the face of God, making Him almost a stranger, or even identifying him as being responsible for human suffering, but the eyes of faith are able to look deeply into this mystery … [we best heal by] … accompanying, being close to and caring for sick brothers and sisters, who are often tried not only by physical wounds, but also spiritual and moral ones, putting you in a privileged position to witness the action God’s saving love for man and the world, embracing even the most painful and terrible.
Benedict XVI to Health Care Professionals Nov. 26 2011 (more here and here)