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The Travels of Marco Polo

Gregory of Tours (A.D. 544–595) relates that “in that place in India where the body of Thomas lay before it was transported to Edessa, there is a monastery and a temple of great size and excellent structure and ornament. In it God shows a wonderful miracle; for the lamp that stands alight before the place of sepulture keeps burning perpetually, night and day, by divine influence, for neither oil nor wick are ever renewed by human hands;”