We, members of the little Christian community of Arvaiheer, have lived the joy of our jubilee pilgrimage in Mongolia! After the announcement that we, too, would have gone to the holy door in Ulaanbaatar, at the Cathedral dedicated to St. Peter and St. Paul, expectations were high and vibrant! The Mongolian religious tradition knows the custom of pilgrimages, originally taken from the Tibetan experience of approaching to the holy city of Lhasa. The ascetic wanderings of Buddhist monks in the past century, before it was forbidden by the communist regime, which had in mind to put an end, also by violence, to any religious expression, were also well known. Starting from these assumptions and relying on the enthusiasm immediately shown by people, the best preparation for the event was focused mainly on the Christian meaning of the pilgrimage and of the crossing of the holy door. At the same time it was an excellent occasion to deepen the meaning of forgiveness and reconciliation and to share personal experiences. Meeting the merciful God revealed by Christ is indeed the good news that enters people’s life, raises them up from miseries and fears, and opens new horizons! Also the idea of indulgences is easily understandable, considering some similarities with an analogous practice present in Mongol Buddhism. For us, missionary fathers and sisters, this has been a positive rediscovery while we were explaining it to the people.