67 From such a rule sprang those great men, Elijah, Elisha, John the son of Elizabeth, who clothed in sheepskins, poor and needy, and afflicted with pain, wandered in deserts, in hollows and thickets of mountains, among pathless rocks, rough caves, pitfalls and marshes, of whom the world was not worthy. From the same, Daniel, Ananias, Azarias, and Misael, who were brought up in the royal palace, were fed meagrely as though in the desert, with coarse food, and ordinary drink. Rightly did those royal slaves prevail over kingdoms, despise captivity, shaking off its yoke, subdue powers, conquer the elements, quench the nature of fire, dull the flames, blunt the edge of the sword, stop the mouths of lions; they were found most strong when esteemed to be most weak, and did not shrink from the mockings of men, because they looked for heavenly rewards; they did not dread the darkness of the prison, on whom was shining the beauty of eternal light.
Source: Letters (New Advent)