27 September, 1947: Formation of Church of South India (CSI) in 1947, as a union of Anglican, Presbyterian, Congregationalist and Methodist churches. The idea of a Church union was proposed in 1919 at a conference held in Tranquebar (now Tarangambadi) in 1919. After 28 years of discussions various denominational churches in South India established by different Missionary societies agreed to the formation of the Church of South India in 1947 after India attained independence. The inaugural ceremony was held at St. George Cathedral Madras (Chennai).
Today the Church of South India is one of the largest Protestant churches in India and is a member of the Anglican Communion and its bishops participate in the Lambeth Conferences. It is also a member of the World Council of Churches, the World Alliance of Reformed Churches, and the National Council of Churches in India.
The Church of South India (CSI), Church of North India (CNI), and Malankara Mar Thoma Syrian Church of India jointly formed the Communion of Churches in India (CCI) in 1978 for mutual recognition of the ministry and leaders, inter communal relationship, and to explore possibilities of working together and other areas of cooperation in the fulfillment of the mission of the Church in India.
The presiding bishop of the inaugural function was the Rt. Revd. C. K. Jacob of the Anglican Diocese of Travancore and Cochin. A vast congregation gathered in the cathedral at Madras from all over the world. The following historical declaration was made by Bishop Jacob at the inaugural service.
“Dearly beloved brethren, in obedience to the Lord Jesus Christ the head of the church, who on the night of his passion prayed that his disciples might be one, and by authority of the governing bodies of the uniting churches whose resolutions have been read in your hearing and laid in your prayer before Almighty God; I do hereby declare that these three churches, namely – the Madras, Madura, Malabar, Jaffna, Kannada, Telugu, Travancore Church councils of the South India United Church; the Methodist Church of South India, Trichinopoly, Hyderabad and Mysore districts; the Madras, Travancore and Cochin, Tinnevelly and Dornakal dioceses of the Churches of India, Burma and Ceylon; are become one Church of South India, and these bishops, presbyters, deacons and probationers who have assented to the basis of union and accepted the constitution of the Church of South India, whose names are laid upon this holy table, are bishops, presbyters and deacons of this church. In the name of the Father, and the Son, and the Holy Spirit, Amen.” ~ wikipedia