In the Armenian Church the Holy Muron is prepared and blessed every seven years. It is composed of olive oil and forty-eight aromas and flowers. The remaining portion of the previous blessed holy oil is poured into the newly prepared oil during the blessing ceremony and passes the blessing from generation to generation. It is said that this very procedure has been followed for nearly 1700 years.
The Catholicos of all Armenians in Etchmiadzin combines a new mixture of holy muron in the cauldron every seven years using a portion of the holy muron from the previous blend. This is distributed to all of the Armenian churches throughout the world. Here are some photos of this years ceremony in Tehran’s St. Sarkis Cathedral:
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More information about the ceremony can be found here: Wikipedia