John has served as a wireless operator on sea, land and air (1939 – 1965). In the beginning of 1966, John entered Christian service.
Since then he has served in the Evangelical Fellowship of India, Evangelical Fellowship of Asia and AD2000 & Beyond Movement. He has been closely involved with World Evangelical Fellowship, the Lausanne Committee for World Evangelization and other international bodies.
John and his wife, Manorama, are parents of four adult married children, Ramesh, Ramani, Ravi, and Rajiv. They have eight grandchildren.
Until her passing in 2014, Manorama cared for John as he engaged in various ministries, including serving as ACTION’s Minister-at-Large. Manorama and John had celebrated their 50th wedding anniversary in 2000.