113 Pray then, Venerable Brethren, pray without ceasing; pray especially when you offer the Divine Sacrifice of Love. Do you, too, pray, you whose courageous profession of the Faith entails today hard, painful and not rarely, heroic sacrifices; pray you, suffering and agonizing members of the Church, when Jesus comes to console and to heal your pains, and do not forget with the aid of a true spirit of mortification and worthy practice of penance to make your prayers more acceptable in the eyes of Him Who "lifteth up all that fall: and setteth up all that are cast down" ( Psalm cxiv. 14), that He in His mercy may shorten the days of trial and that thus the word of the Psalmist may be verified: "Then they cried to the Lord in their affliction: and he delivered them out of their distresses" ( Psalm cvi. 13).
Source: Summi Pontificatus (Vatican.va)