Luke 9:28-30

Young's Literal Translation

²⁸ And it came to pass, after these words, as it were eight days, that having taken Peter, and John, and James, he went up to the mountain to pray,

²⁹ and it came to pass, in his praying, the appearance of his face became altered, and his garment white -- sparkling.

³⁰ And lo, two men were speaking together with him, who were Moses and Elijah,