Bishop Mar Joseph Kallarangatt was born on 27 January 1956 at Kayyoor. After his school studies, he joined the Good Shepherd Minor Seminary, Karoor for the ecclesiastical studies. He was ordained priest on 2 January 1982. After having served as the assistant parish priest at Aruvithura and Ramapuram, he was sent to Rome for higher studies in 1984. He secured his doctorate in theology from the Gregorian University, Rome. Then he started teaching at the St. Thomas Apostolic Seminary Vadavathoor. Following the resignation of His Excellency Mar Joseph Pallikaparampil, he was appointed as the third Bishop of Palai on 18th March 2004, while serving as the president of the Paurastya Vidyapitam. He was ordained Bishop by His Grace Mar Joseph Powathil and was enthroned by His Beatitude Mar Varkey Cardinal Vithayathil on 2 May 2004 at the St. Thomas College grounds, Palai.
Mar Joseph Kallarangatt had published more than 35 scholarly books on theology and oriental liturgy. The Bishop had participated and presented papers in different theological conferences in and outside the country. Ever since the beginning of his teaching ministry as a prolific writer he has been writing on various theological and secular topics in different international, national and local journals.
At present, he is also serving as the Chairman of CBCI Doctrinal Commission; Chairman Syro Malabar Commission for Doctrine. In 2007, His Excellency celebrated his Sacerdotal Silver Jubilee. In February 2012, he is appointed as a member of the Catholic delegation of the Joint Commission for Dialogue with the Malankara Jacobite Syrian Orthodox Church and the Malankara Syrian Church. He attended XIII Ordinary General Assembly of the Synod of Bishops on the New Evangelization for the Tranmission of Christian Faith, held at Rome from 07-28 October 2012. Under his patronage and leadership, the 31st Plenary Assembly of Catholic Bishop’s Conference of India (CBCI) was hosted by the Eparchy from05 to 12 February, 2014 at Alphonsian Pastoral lnstiture, Arunapuram Pala. He, as a delegate of the Syro Malabar Synod, attended XIV Ordinary General Assembly of the Synod of Bishops on the Family, held at Rome from 5-25 October 2015.