Luke 9:28-31

28And it came to pass after these words, about eight days, that taking Peter and John and James he went up into a mountain to pray.

29And as he prayed the fashion of his countenance became different and his raiment white [and] effulgent.

30And lo, two men talked with him, who were Moses and Elias,

31who, appearing in glory, spoke of his departure which he was about to accomplish in Jerusalem.