[2] As a Priest of the Andhra Evangelical Lutheran Church, Devasahayam served in pastoral roles in Rajahmundry, Narasaraopeta, Mangalagiri, and Eluru parishes.
[1] R. Joseph and B. Suneel Bhanu who compiled a bibliography of original Christian writings in India in Telugu included a book by K. Devasahayam entitled[3] The Good News of the Cross first published in 1962.
The Andhra Christian Theological College, a special purpose entity was formed in 1964 taking in all the faculty and students of the closed-down Seminaries.
[8] K. Devasahayam was made Rector of the Theology Department the same year in place of M. P. John who left for the Bible Society of India.
[8] While teaching Church History at the Andhra Christian Theological College, a newly formed ecumenical seminary in Rajahmundry, Devasahayam contested for the Presidency of the Andhra Evangelical Lutheran Church Society headquartered in Guntur and was elected in 1965[7] and was in office till 1969.