Klymentiy has been beatified by the Catholic Church, as well as awarded the title of Righteous Among the Nations by the State of Israel for saving Jewish lives during the Holocaust in Ukraine.

Sheptytsky was born as Kazimierz Maria Szeptycki on 17 November 1869 in the village of Prylbychi, Yavorich Region, near Lviv[3] in Galicia to an old Polish-Ruthenian noble family.

He was a younger brother of the future Venerable, Metropolitan Bishop Andrey Sheptytsky, and received his education first at home and starting in 1882 at Kraków.

After a year he decided to follow the example of his older brother, returning to the Ukrainian Greek Catholic Church of their ancestors and entered the Studite Monastery at Kamenica, near Čelinac, Bosnia-Herzegovina.

From 1941 to 1944, when the region was occupied by Nazi Germany, Jewish boys were hidden at the monastery in Univ, home to monks of the Ukrainian Greek Catholic Church.

Along with the handful of holy men who were the children's daily caretakers, three figures were instrumental in their safekeeping: Metropolitan Andrey Sheptytsky, the head of the Ukrainian Greek Catholic Church, his brother Klymentiy, and Omelyan Kovch, a priest from the nearby town of Peremyshliany.

On 5 June 1947, he himself was arrested by Soviet authorities and held, first in an NKVD prison in Lviv, then in Kyiv, and finally, after his steadfast refusal to renounce his faith and serve the Moscow Patriarchate, sentenced to eight years imprisonment.

Sheptytsky was beatified on 27 June 2001 by Pope John Paul II in Lviv, during his apostolic journey to Ukraine, together with 27 other members of the Ukrainian Catholic Church previously declared Venerable.

[9] In November 2011, James Temerty, chairman of the Ukrainian-Jewish Encounter Initiative (UJE) donated $1.2 million to establish three endowed chairs in Jewish Studies at the Ukrainian Catholic University in Lviv, Ukraine.

For example, the spiritual inheritance of the Sheptytsky brothers alone, Andrey and Klymentiy, is sufficient to reveal to the contemporary person all the beauty of the love of humanity.