missions. The propagation of the Christian faith among non-Christian people was one of the main tasks of the Church from the first. The command to ‘make all nations my disciples’ was attributed to the Risen Christ (Mt. 28: 19). Apart from the labours of St
Paul and the missionary journeys rightly or wrongly attributed to the Apostles (notably St
Thomas), unknown Christians soon carried the Gospel throughout the Roman world and beyond it. Missionaries of the
Church of the East went as far as
China. St
Patrick's work in
Ireland (5th cent.) was followed by activity in
Scotland and England, where St
Aidan's work in the north was supplemented in the south by the Roman mission of St
Augustine.
Gregory I's instruction to him not to destroy pagan temples but to turn them into Christian churches was important in the development of missionary thought. In the 8th cent. British missionaries took part in the conversion of northern and central Europe. The conquests of
Charlemagne (d. 814) were accompanied by the forcible Baptism of the vanquished. In Slavonic lands there were missions from
Constantinople as well as Rome. The Poles, Magyars and
Russians were converted. In the Middle Ages efforts were made to convert the remaining heathen tribes of Europe, missions to the Muslims were initiated (though largely overshadowed by the
Crusades), and work was carried on among the Tartars and Chinese.
The
Counter-Reformation brought a renewal of missionary endeavour in the RC Church. New gains were sought to counteract the ‘losses’ in north-western Europe, and the
Dominicans, *Franciscans, *Augustinians, and the newly-founded
Capuchins and
Jesuits worked unstintingly in the Americas and in
India, *Japan, China, and in
Africa. In 1622 Gregory XV formed the Congregation of
Propaganda which struggled to liberate missionary work from Spanish and Portuguese secular interests. It subsequently had general supervision of missionary work in the RC Church. In the 19th cent. a number of modern religious orders devoted themselves specifically to missionary work, including the
Marists, the
Holy Ghost Fathers, the
Mill Hill Missionaries, the Society of the
Divine Word, and the
White Fathers. Prominence was given to charitable and educational work, and women religious played an important part. In the early 20th cent. a different approach was fore-shadowed by
Benedict XV's encyclical
Maximum illud (1919); this was directed to the firm establishment of the Church locally, with a clergy and hierarchy of its own. The Second
Vatican Council in 1965 stressed the need to understand people and their cultures as a precondition for adapting liturgy and theology.
In the Reformed Churches there was at first little missionary activity for various reasons. The
SPCK and
SPG were founded in 1698 and 1701 respectively, but the main missionary work was still carried out by the
Moravians and the Danish-Halle missions in India. The Evangelical Revival gave a new impetus to evangelization on a world-wide scale. The Methodist Missionary Society dates from 1786, the Baptist Missionary Society from 1792, the
LMS from 1795, the
CMS from 1799, and the
British and Foreign Bible Society from 1804. Similar organizations were being founded in America and in other parts of Europe. This phenomenal expansion of work saw the rise of other societies with specialized spheres of work, such as the
Universities' Mission to Central Africa (1859). There has also been a growth in ecumenism, until recently confined to Protestant denominations. The World Missionary Conference at
Edinburgh in 1910 aimed at world evangelism on an ecumenical basis. The International Missionary Council (founded in 1921) in 1961 joined the
World Council of Churches and became its Division of World Mission and Evangelism (now its Mission, Education and Witness unit). Since 1963 it has enjoyed the co-operation of the
Orthodox Church which, in the 20th cent. expanded from Europe and America to parts of Africa and the Far East. Another element in the missionary scene is the activity of various ‘independent’ Churches which are not affiliated to the World Council of Churches. At the same time, Christian missionaries from the non-Western world are trying to introduce the Gospel into W. culture and to overcome the gulf between the established Churches and secularized people.