Luke 9:28-31

Eight days later, Jesus took Peter, Jacob, and John and climbed a high mountain to pray. As he prayed, his face began to glow until a blinding glory streamed from him. A radiant glory illuminated his entire body. His brightness became so intense that it made his clothing blinding white, as multiple flashes of lightning. All at once, two men appeared in glorious splendor: Moses and Elijah. They spoke with Jesus about his soon departure from this world and the things the Father destined him to accomplish in Jerusalem.