Indian theologian, Professor of World Christianity and the Director of Andrew F. Walls Centre for the Study of African and Asian Christianity at Liverpool Hope University, U.K. He is also currently a chief editor of Dharma Deepika, a biannual South Asian Journal of Missiological Research. His teaching and research primarily deals with the dynamics of Christian missions and their interaction with native cultures. He has taught in major theological colleges and universities in India, Germany, and the U.S.A. and carried out advanced research in India, Germany, Denmark, and the United Kingdom. He is a leading authority on the study of the Royal Danish-Halle Mission, Pietism, and the emergence of Protestant churches and Tamil Christian leaders in eighteenth century India.