The Transfiguration as told in Mat. 27 1-8; Mark 9, 1-8; Luke 9, 28-36, is a subject in which the plastic Transposition has posed difficulties for medieval artists. The earliest representations return to the Lives mosaic at Sainte-Catherine of Sinaï and mosaic of Saints Apôtres à Constantinople). But from the 11th century, due to byzantine artistic influences, the scene showed a harmonious development in the West. This theme remains relatively rare in iconography, and it is found mostly in Cluniac monasteries where the Transfiguration was part of a solemn feast. Peter the venerable composed the office.