Elder Paisios the Athonite taught:
[T]he aim of the monk is not to be engaged in much handiwork and collect money to help the poor, as this translates into spiritual decline. Rather, through his prayer the monk could help, not by pounds, but by tons the needs of others (when, for instance, there exists a drought, by his prayer he could replenish the world’s storehouses). Therefore, God “raiseth up the poor out of the dust, and lifteth up the beggar from the dunghill” . Let us not forget what the Prophet Elijah  did.
Monks, therefore, don’t leave the desert in order ‘to go to the world to help a poor person, nor to visit someone ill in the hospital to give him an orange or some consolation (that which is usually done by lay people, and is the sort of thing that God will ask from them). Monks pray for all the sick to receive a twofold health (physical and spiritual), and the Good God has mercy on His creatures and helps them recover, so that they, in their turn, working as good Christians, will also help others.
Furthermore, neither do monks visit those in prison, for they themselves are voluntarily imprisoned due to their great philotimo towards Christ, their Benefactor and Saviour; Christ gives His love in abundance to His children who have philotimo, the monks. Thus, while they are within the castle (the monastery), the presence and love of Christ transforms it into Paradise. This heavenly joy that the monks feel, they pray and ask that Christ give it to all our incarcerated brothers in the world’s prisons. In this way, the Good God is moved by the love of His good children and spreads consolation to the souls of prisoners, many times even setting them free.
Besides these prisoners, monks help other more serious cases of those who are not imprisoned for just ten or twenty years, but eternally, and are in need of much greater help. These are our brothers awaiting trial, who have fallen asleep, whom the monks visit in their own way, offering many spiritual refreshments. The Good God helps the reposed, and, at the same time, acquaints the monks, after their pained prayers for their departed brothers, with an inexpressible rejoicing, as if saying: “Don’t worry, my children, I have helped the departed as well”.