Luke 9:29

29Andκαὶit came to passἐγένετοinἐνtheτῷprayingπροσεύχεσθαιof Himαὐτὸνtheτὸappearanceεἶδοςof theτοῦfaceπροσώπουof Himαὐτοῦ[was] alteredἕτερονandκαὶtheὁclothingἱματισμὸςof Himαὐτοῦwhiteλευκὸςbecame dazzlingἐξαστράπτων.

And it came to pass in His praying [that] the appearance of His face [was] different and His clothing white, flashing forth.