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KJV - And as he prayed, the fashion of his countenance was altered, and his raiment was white and glistering.
ASV - And as he was praying, the fashion of his countenance was altered, and his raiment `became' white `and' dazzling.
BBE - And while he was in prayer, his face was changed and his clothing became white and shining.
WEB - As he was praying, the appearance of his face was altered, and his clothing became white and dazzling.
YLT - and it came to pass, in his praying, the appearance of his face became altered, and his garment white -- sparkling.