In the Transfiguration, how did Peter know it was Moses and Elijah if he had never seen them or a picture of them?

Question: I was reading about the transfiguration in Matthew and I realized that Peter seems to know immediately that the two shining figures with Jesus are Elijah and Moses.  How did Peter know what Elijah and Moses looked like since no one in the first century would know what they looked like and there were … Continue reading In the Transfiguration, how did Peter know it was Moses and Elijah if he had never seen them or a picture of them?