Once as they were swept along in near peril of wreck, through flying sea-smoke and plagues of hail, they heard a strange unearthly music rising and falling in the blast.  Some said it was Angels sent to strengthen them; others said it was wild birds which they had seen flying past in flocks; but Serapion said, "If it be Angels, blessed be God; if it be birds, yet even they are God's Angels, lessoning us how we shall praise Him, and sing Him a new song from the ends of the earth."  Then he raised his voice, singing the psalm