In 2003, Dionysius was canonized as a saint by the Malankara Orthodox Church, and his feast day is celebrated on February 23 each year.

[2] On 12 October 1876, while still a high school student, he was ordained as a sub-deacon by Patriarch of Antioch Ignatius Peter III at Puthuppally St. George Church.

Geevarghese soon became a great Syriac scholar under the careful tutelage of St. Gregorios, who taught him at Parumala Seminary.

He also learned Theology and Syriac language from Metropolitan Baselios Paulose I at Monastery of Saint Thomas, Vettikkal.

In recognition of his expertise in Syriac and theology he was designated as Malankara Malpaan (a Doctor and Teacher of the Church).

Geevarghese spent his spare time reading, studying, and thinking which translated to his many writings, such as the book Doctrines of the Church.

During this period, he also authored the book Doctrines of the Church(Mathopadeshasarangal) which remains one of the most authoritative and popular works describing Orthodox dogma and ecclesiastical traditions with thorough Scriptural explanations.

In 1903, he translated the Holy Service book from Syriac to the local language Malayalam and published it with the blessings of the Church authorities.

The Malankara Association meeting of 14 February 1908 officially elected him along with Kochuparampil Paulose Ramban for consecration as Metropolitan.

In the same year, the Patriarch of Antioch Ignatius Abded Aloho II asked the two elected monks to reach Jerusalem during the Great Lent for the ordination.

[6] He was an outstanding orator who was well aware of the importance of the vitality and Christian persuasiveness of the Bible when delivering the speeches to the faithful.

Mar Dionysius VI and his fellow clergies have played a central role in elevating the primate of Malankara Orthodox Church to the title Catholicos of the East.

By establishing the Catholicate in Malabar, the visionary Metropolitan succeeded in defending the sovereignty and independence of the St. Thomas Christians of India,though the rift between the Jacobite Syrian Orthodox Church and the Malankara Orthodox Church were never resolved and has grown worse over time with regular legal arguments and some physical altercations.

In his last encyclical, he wrote to the entire Malankara Church: And I commit in each of you the responsibility to upkeep that institution which most of you along with myself truly believe to be indispensable for the survival, prosperity and progress of our Church, and which has been till now painstakingly guarded by all of us, namely the Catholicate.Dionysius VI experienced physical suffering on 13 February 1934, and suffered from paralysis on 16 February.

The Catholicos Baselios Geevarghese II might have foreseen this when he instructed the sentence "The time will not dim his glory" to be engraved on the tomb of Dionysius VI.