He prepared local people for church ministry and tried to transfer administrative responsibilities to them.
However, when he retired after 33 years, the number of congregations had increased to 56, Christians to 10,060 and annual income to Rs.
The church building constructed in the LMS compound and dedicated to the memory of Mateer was opened for worship on 1 December 1906.
He retired in 1904 and his son John M. Kesari was the first pastor of the newly constructed Mateer Memorial Church, serving there from April 1905 to March 1913.
The church building was made in granite, with a square bell tower with a vestibule beneath and a roof supported by gothic arches.
The Celtic cross on the bell tower is made of cut stone, and commemorates Mateer's Irish background.