Abba Moses the Robber a/k/a Moses the Strong a/k/a Moses the Black was an escaped slave who came to lead a gang of outlaws around the year 350. According to the lore, he committed a number of murders, and then a botched robbery where he was identified and pursued.
He fled into the desert and found the monastic colony at Wadi El Natrun, near Alexandria. He became genuinely taken by the faithful monastic life and was able to convince the brothers of his sincerity and join them.
In his time as a monk, Moses defeated his old gang of robbers, leading him to be petitioned for protection against thieves as bandits.
He also famously defeated a gang of demons who attacked him while he was drawing water for one of the hermits. As a result, according to a 5th century account, "God rendered him a dread to the demons."
These cards were produced by a more mainstream Christian printer and contain a more mainstream biography on the back, but the icon is nonetheless totally appropriate for either virtue or vice.
In some traditions, these would be made stronger by doing a covert working with the icon before or after (or while) having it blessed by a priest. In this way, apparently mainstream saints could reinforce blessings and petitions that a priest wouldn't otherwise sanction.
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