According to Luke, when Moses and Elijah appeared during the Transfiguration, they spoke of Jesus'
Answer Details
According to Luke's account of the Transfiguration, Moses and Elijah appeared and spoke with Jesus about His "departure" (Luke 9:31). This is generally understood to refer to Jesus' impending death and the events that would follow, including His resurrection and ascension. Moses and Elijah, who represented the Law and the Prophets respectively, were acknowledging Jesus as the fulfillment of their teachings and prophecies.