Photo by Robert Byron (author of The Station) 1920- 1930: iron corset for mortification, now disused.. Photographed in Xenophontos.
Did not find background information about mortification on Athos. The subtitle under the photo stated clearly that this corset is no longer used.
The term “mortification of the flesh” comes from Saint Paul in this quote: “For if you live according to the flesh you will die, but if by the Spirit you put to death the deeds of the body you will live”. (wikipedia)

In its simplest form, it can mean merely denying oneself certain pleasures. It can also be practiced by choosing a simple or even impoverished lifestyle; this is often one reason many monks of various religions take vows of poverty.
In some of its more severe forms, it can mean causing self-inflicted pain and physical harm, such as by beating, whipping, piercing, or cutting. (wikipedia)
This is said about the popeJohn Paul
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