4 Elijah and Moses appeared to them, and they were talking with Jesus. 5 Peter answered Jesus, “Rabbi, it is good for us to be here. Let’s make three tents: one for you, one for Moses, and one for Elijah.” 6 For he didn’t know what to say, for they were very afraid. 7 A cloud came, overshadowing them, and a voice came out of the cloud, “This is my beloved Son. Listen to him.” 8 Suddenly looking around, they saw no one with them any more, except Jesus only. 9 As they were coming down from the mountain, he commanded them that they should tell no one what things they had seen, until after the Son of Man had risen from the dead. 10 They kept this saying to themselves, questioning what the “rising from the dead” meant. 11 They asked him, saying, “Why do the scribes say that Elijah must come first?” 12 He said to them, “Elijah indeed comes first, and restores all things. How is it written about the Son of Man, that he should suffer many things and be despised? 13 But I tell you that Elijah has come, and they have also done to him whatever they wanted to, even as it is written about him.”
Matthew Henry's Commentary on Mark 9:4-13
Commentary on Mark 9:1-13
(Read Mark 9:1-13)
Here is a prediction of the near approach Christ's kingdom. A glimpse of that kingdom was given in the transfiguration of Christ. It is good to be away from the world, and alone with Christ: and how good to be with Christ glorified in heaven with all the saints! But when it is well with us, we are apt not to care for others, and in the fulness of our enjoyments, we forget the many wants of our brethren. God owns Jesus, and accepts him as his beloved Son, and is ready to accept us in him. Therefore we must own and accept him as our beloved Saviour, and must give up ourselves to be ruled by him. Christ does not leave the soul, when joys and comforts leave it. Jesus explained to the disciples the prophecy about Elias. This was very suitable to the ill usage of John Baptist.