Libanius
Greek rhetorician and teacher at Antioch. Recipient of Basil's letter 140 in which Basil tells him he converses with Moses and Elijah.
Preliminaries
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TO THE MOST REVEREND AND MOST ILLUSTRIOUS LORD HENRY FRANCIS VAN DER BURCH, ARCHBISHOP AND DUKE OF CAMBRAI, PRINCE OF THE HOLY ROMAN EMPIRE, COUNT OF CAMBRAI.
— Basil writes letter 140 to Libanius the Sophist, telling him that he converses with Moses and Elijah
"Saint Basil himself acknowledges this in letter 140 to Libanius the Sophist"