Redemptoris Missio §35

³⁵ The mission ad gentes faces an enormous task, which is in no way disappearing. Indeed, both from the numerical standpoint of demographic increase and from the socio-cultural standpoint of the appearance of new relationships, contacts and changing situations the mission seems destined to have ever wider horizons. The task of proclaiming Jesus Christ to all peoples appears to be immense and out of all proportion to the Church's human resources. The difficulties seem insurmountable and could easily lead to discouragement, if it were a question of a merely human enterprise. In certain countries missionaries are refused entry. In others, not only is evangelization forbidden but conversion as well, and even Christian worship. Elsewhere the obstacles are of a cultural nature: passing on the Gospel message seems irrelevant or incomprehensible, and conversion is seen as a rejection of one's own people and culture.