The Hieratikon, a Treasure of Orthodox Culture and Spirituality

The doctoral thesis about Hieratikon of priest Lucian Petroaia brings to the researchers’ attention, the most important book of service of the orthodox priest. From a historical perspective, the author has carefully identified and investigated all editions of the Hieratikon printed in Romania, from 1508 to the present; from the point of view of analyzing the content of the Hieratikon, he follows the evolution of the order of the Holly Liturgy over 500 years, often comparing the text of the Roman