K. Reuben Mark

Moderator of CSI He was elected as Deputy Moderator of CSI Synod from 2020 to 2023. After Reuben Mark was the Moderator of the CSI Synod from July 2025

Ministerial formation Graduate After the completion of graduate studies in Hanumakonda, Reuben Mark discerned his avocation towards priesthood and became a ministerial candidate of the Diocese of Karimnagar of the Church of South India, then under the bishopric of G. B. Devasahayam, CSI who took him into the Church and became his Spiritual Confessor and sent him for spiritual formation to the United Theological College, Bangalore, where he studied Bachelor of Divinity degree from 1984 to 1988 under the Principalship of the Old Testament Scholar, E. C. John, CSI and was taught by faculty that comprised G. D. Melanchthon, AELC and later transferred himself to the Sam Higginbottom Institute of Agriculture, Technology and Sciences, Allahabad researching under the able guidance of Prof. V. K. Singh

Ecclesiastical ministry

Pastoral After his Seminary studies, Reuben Mark was ordained as a Deacon in 1988 by then Bishop K. E. Swamidass, CSI and the following year as a Presbyter at the CSI-Wesley Cathedral in Karimnagar and began pastoring parishes within the ecclesiastical jurisdiction of the Diocese of Karimnagar until 1992 when he went to upgrade his academics in the Protestant Seminary in Bangalore. After his return from the Seminary in 1994, Reuben Mark began re-pastoring the parishes until 1995 when Bishop S. John Theodore, CSI sent him for teaching ministry to the Protestant Regional Seminary in Secunderabad.

Teaching In 1995, Reuben Mark joined the Faculty of the Andhra Christian Theological College, Secunderabad and began teaching Practical Ministry/Homiletics at the Andhra Christian Theological College, Secunderabad from 1995 to 2015 and taught in a near-ecumenical setting comprising the Wesleyan, Methodist, Lutheran, Congregational, Baptist, and Anglican Church societies beginning with the periods of Principalship comprising the Church of South India, the Convention of Baptist Churches of Northern Circars, the Samavesam of Telugu Baptist Churches, and the Andhra Evangelical Lutheran Church notably under The Rev. R. Yesurathnam, CSI, The Rev. K. D. G. Prakasa Rao, CBCNC and D. J. Jeremiah, CBCNC, The Rev. B. J. Christie Kumar, STBC, The Rev. N. V. Luther Paul, AELC, The Rev. Ch. Vasantha Rao, CSI and The Rev. T. Mathews Emmanuel, CBCNC.

After a two-decades teaching ministry that began in 1995, Reuben Mark was recalled to the Diocese of Karimnagar by the Church of South India Synod in mid-2015 as his name was announced as Bishop-elect for the Diocese of Karimnagar resulting in his resignation from the Faculty of the near-ecumenical Protestant Regional Theologiate in Secunderabad.

Bishopric

During the period when Reuben Mark was teaching at the Seminary in Secunderabad, the Diocese of Karimnagar saw the change of at the Bishopric in 2007 following which P. Surya Prakash, CSI, Reuben Mark's Professor at Bangalore was consecrated as the fifth Bishop - in - Karimnagar who occupied the Cathedra up to 2014 until his resignation on account of superannuation resulting in sede vacante. The Church of South India Synod conducted elections for the Bishopric following which G. Dyvasirvadam, CSI, then Moderator of the Church of South India Synod announced the appointment of K. Reuben Mark as Bishop-elect for the Diocese of Karimnagar.

On 4 May 2015 the Most Reverend G. Dyvasirvadam, CSI, then Moderator principally consecrated Reuben Mark with other co-consecrator, The Right Reverend Thomas K. Oommen, CSI, then Deputy Moderator at the CSI-Wesley Cathedral, Karimnagar in the presence of Bishops of the adjoining dioceses, B. D. Prasada Rao, CSI, Eggoni Pushpalalitha, CSI Order of Sisters, V. Prasada Rao, CSI and the General Secretary of the Church of South India Synod, Daniel Sadananda, CSI. Also present were the two living patriarchs of the Diocese of Karimnagar, the Old Testament Scholar S. J. Theodore, CSI and P. Surya Prakash, CSI.