I know well that the principal service I can render to the Church and to humanity is, precisely, prayer, for in praying I confidently place in the Lord’s hands the ministry that he himself has entrusted to me, together with the future of the entire ecclesial and civil communities.
Those who pray never lose hope, even when they find themselves in a difficult and even humanly hopeless plight. Sacred Scripture teaches us this and Church history bears witness to this.
In fact, how many examples we could cite of situations in which it was precisely prayer that sustained the journey of Saints and of the Christian people! (Source)