We are now in chapter 9 of Mark, verses 2-13. Jesus took Peter, James and John with him up on a mountain. There, the three disciples saw Jesus turn a glowing white, and Elijah and Moses were with him, talking to him. That must have been an amazing sight to the men! Two prophets, long dead, now standing and talking with Jesus!
Peter said, It is good that we've seen this. We should build three tabernacles here on this spot : one for you, one for Elijah and one for Moses. But then a cloud came over the area and soon there was only Jesus standing there. A voice from above told them, This is my Son. Hear him.
As they came down from the mountain, Jesus told the three not to tell anyone what they had seen. They probably would have scarcely believed it themselves if they hadn't seen it with their own eyes.
They wanted to worship the two prophets right along with Jesus, having all three on the same level. That wasn't the plan. Jesus is not just another prophet. He is the Son of God. The time for following Moses and Elijah are past now. Now we are to follow Jesus.
Before the small group reached the other disciples they asked of Jesus, why do the scribes say that Elijah must first come?
Jesus replied that he did come already, meaning John the baptiser. And man did to him what they were going to do, according to the scriptures.