Prof. Dr. P. Martin Deva Prasath and his wife Sastriar Sarah Martin belong to the Church of South India and are residing at Kotagiri in the Nilgris District in Tamil Nadu. Martin served as a Professor and Head of the Department of Chemistry for 27 years in a Christian College at Tranquebar and Sarah also served as Assistant Professor of English in the same institution for 17 years. They are together in the Lord’s ministry since 1992. Martin and Sarah gave in their voluntary resignation with the purpose of serving the Lord full time.