The elderly transmit to the young people to search for the meaning of life and faith. It's a grace that we must thank the Lord, affirm the pope Francis. Here is the suite of the catechesis about the Vocation of the old age:

Someone should also sing, for them too, sing of the signs of God, proclaim the signs of God, pray for them! Let us look to Benedict XVI, who chose to spend the final span of his life in prayer and listening to God! This is beautiful! A great believer of the last century, of the Orthodox tradition, Olivier Clément, said: “A civilization which has no place for prayer is a civilization in which old age has lost all meaning. And this is terrifying. For, above all, we need old people who pray; prayer is the purpose of old age”. We need old people who pray because this is the very purpose of old age. The prayer of the elderly is a beautiful thing.

We are able to thank the Lord for the benefits received, and fill the emptiness of ingratitude that surrounds us. We are able to intercede for the expectations of younger generations and give dignity to the memory and sacrifices of past generations. We are able to remind ambitious young people that a life without love is a barren life. We are able say to young people who are afraid that anxiety about the future can be overcome. We are able to teach the young who are overly self-absorbed that there is more joy in giving than in receiving. Grandfathers and grandmothers form the enduring “chorus” of a great spiritual sanctuary, where prayers of supplication and songs of praise sustain the community which toils and struggles in the field of life.

General Audience of Pope Francis, March 11, 2015