The occupation of Manipur by the British in 1891 paved the way for the entry of the Gospel of Jesus Christ into the North-East Region of India. Missionaries came to Manipur through two gates – the Northern Gate, i.e., through the Naga tribes, and the Southern Gate, i.e., through Chin-Kuki tribes. It is the entry of the gospel in Manipur through the Northern gate which brings about the formation of the Presbyterian Church in India (Reformed).
On October 14, 1908, a missionary couple Dr. & Mrs. Peter Frazer and a young man Watkin Roberts left Welsh for India. They arrived at Aizawl, Mizoram, in the winter of 1908. They joined other missionaries like the Rev. and Mrs. David Evan Jones and Rev. & Mrs. Robert Evans. The Rev. Dr. Frazer served in the Welsh Mission Clinic at Aizawl and Robert helped him. As they were distributing tracts of the Gospel John, he heard a rumour that there is someone who could read and write at a village called Senvon, Manipur. He sent a copy of the gospel of John to this man. Three months later the tract he sent to Senvon returned to Robert himself with a note “Come over to Manipur and help us” written on the flyleaf. Robert, with two native Youngman, Lungpau and Thangkai as guides reached Senvon on May 7, 1910.
As the Manipur field proved to be promising, Robert organized some native workers under the name of “Thadou-Kuki Pioneer Mission” in December 1913, which was later renamed “The North East India General Mission” in 1925.
The work of the NEIG Mission was very successful that the Southern region of Manipur which consist of one race but speaking many different dialects were evangelized within a few decades. In the year 1948, the mission church was divided into five presbyteries. The South-West Presbytery of the NEIG Mission which was later renamed as the Evangelical Convention Church was the parent church from which most of the members of the Presbyterian Church in India (Reformed) originates.