Life and Conversion
Sources agree that Arethas, by tradition a native of Polotsk, was a monk of the Kiev Caves Monastery who accumulated wealth in his cell while presenting himself as one who had renounced the world. Accounts describe him as neither giving alms to the poor nor spending on himself nor aiding the monastery, but only hoarding.
When his savings were stolen, his reaction exposed his attachment: he was unable to accept the loss or the counsel of the brethren, became bitter and accusatory, and murmured against God. One account relates that this anguish was so severe that he was nearly driven to take his own life.
During the illness that followed, Arethas experienced a vision in which angelic and demonic powers contended for his soul. The demons pressed their claim on the ground of his avarice and blasphemy; the angels answered that, had he given thanks to God for the property taken from him, the loss would have been reckoned to him as charitable giving, after the manner of Job. Arethas then cried out confessing his sin, declared the money to have been God's own and that he no longer regretted its loss, and recovered. He spent the rest of his life as a recluse, remembered as having grown meek, obedient, and rich in virtue rather than in possessions.
Legacy and Teaching
Arethas is commemorated individually on October 24 and, with the other saints of the Near Caves, on the broader commemorations of the Kiev Caves fathers. His story is preserved chiefly in the synaxarion of the monastery.
His life became a standard homiletic example of avarice as a form of idolatry overcome by grace. Archpriest Grigory Dyachenko's annual cycle of short teachings presents Arethas as one who 'made an idol out of his wealth until the grace of God placed him in the right relationship with earthly acquisitions.'
Relics & Shrines
Arethas was buried in the Near Caves of the Kiev Caves Monastery, where his relics remain. By the monastery's tradition his remains are preserved incorrupt.
Monastic iconographic description depicts him stooped, with a beard the length of that of the monk Kozmina, dressed in monastic garb.
Sources and Dating
The principal account follows the OCA synaxarion and the lives of the Kiev Caves fathers, which place his repose not later than 1190. One later source instead gives his death as around 1220; where the sources conflict, the earlier dating is preferred here.
Several accounts emphasize differing details of the same episode — the degree of his bitterness, his accusations against the brethren, and the exact words of the angels — but agree on the core of the theft, the vision, and his subsequent repentance.