30 As, therefore, the Three Children said, “There is a God in heaven, who is able to deliver us; and if not, let it be known unto you, O king, that we will not serve your gods, and that we will not worship the golden image which you have set up.” Do thou also, when about to perform any duty to God, look forward to manifold dangers, manifold punishments, manifold deaths; and be not surprised, nor be disturbed, if such things happen. For it is said, “My Son, if you come to serve the Lord, prepare your soul for temptation.” For surely no one choosing to fight, expects to carry off the crown without wounds!
And thou, therefore, who hast undertaken to wage a complete combat with the devil, think not to pursue a life without danger, and full of luxury! God has not pledged to you His recompense and His promise here; but everything that is splendid for you in the future life! Be glad and rejoice then, if when you have yourself done any good action, thou receive the contrary, or if you see another suffering this; inasmuch as this becomes to you the source of a higher recompense! Do not be downcast: nor give up your zeal, nor become the more torpid; but rather press onward with more eagerness; since even the Apostles, when they preached, although scourged, stoned, and constant inmates of the prisons, did not only after deliverance from dangers, but also in those very dangers, announce with greater forwardness the message of Truth.
Paul is to be seen in prison, yea, even in chains, instructing and initiating: and moreover doing the very same in a court of justice, in shipwreck, in tempest, and in a thousand dangers. Do thou too imitate these saints, and cease not from good works, so long as you are able; and although you see the devil thwarting you ten thousand times, never fall back! Thou perchance, bearing with you your wealth, hast met with shipwreck; but Paul carrying the word, far more precious than all wealth, was going to Rome, and was wrecked; and sustained innumerable hardships.
And this he himself signified, when he said, “Many times we desired to come unto you, but Satan hindered us.” And God permitted it; thus revealing the more abundantly His power, and showing that the multitude of things which the devil did, or prevented from being done, neither lessened nor interrupted the preaching of the Gospel. On this account Paul gave God thanks in all things; and knowing that he was himself thereby rendered more approved, he exhibited his exceeding forwardness on every occasion, letting none of these impediments prevent him!
Source: Homilies on the Statues (New Advent)