Afterwards he joined the Society of Jesus and was ordained a priest on 24 March 1961 at De Nobili College, Pune.
He wrote his thesis An Enquiry into the Tradition History of Matthew 1-2 under the guidance of Xavier Léon-Dufour.
[1] Along with his colleagues, Francis X D'sa, Rui de Menezes and Kurien Kunnumpuram, he tried to articulate an Indian Christian theology.
He was an ardent advocate of a Liberation Theology adapted to the Indian ethos and socio-religious context.
A collection of his works have been published in four volumes by Jnana Deepa, Institute of Philosophy and Theology, in Pune, India.