v1-2: Only three disciples are taken to see Christ transfigured; a privilege and preparation. His brightness is emphasised; the glory of John 1.14; the majesty of 2 Pet 1.16.
The Jews emphasise law and prophets; Christ supersedes both; here is the revelation of Christ, who is greater.
v3: Moses represents the law, and Elijah the prophets; each are fulfilled in Christ, and are perfected and superseded; Christ is God's final and perfect revelation of Himself, Heb 1.1-4.
v4: Again, Peter's comments indicate an expectation of a Messianic kingdom.
v5-8: The voice of the Father, testifying to Christ's deity. The cloud and the voice bring fear to the three disciples. In time, they look up from the ground and see Christ only. Any loyalty to the past is to be changed, as they are to be His followers.
v9: The incident to be kept private until after the resurrection.
v10-13: See Luke 1.17; John Baptist the 'second' Elijah. The disciples have seen Scripture fulfilled in John Baptist. This is a further strong implication that Jesus is indeed the Messiah.
v14: Coming down from the mountain, they are flung into daily tasks and trials.
v15: The man's diagnosis is very different from Jesus,' who spoke of the demon of a particular kind (v21, see NIV margin). We see Jesus' perfect understanding of the problem, and His power to deal with it. We see too the seriousness of the problem. Unless we see the real nature of situations, there is a real danger that we only deal with the symptoms.
The boy is epileptic, lit. 'moon-struck,' see Ps 121.6.
v16: The disciples are unable to deal with the boy, see 10.1, 7-8, due to their unbelief.
v17-20: The matter of faith, to identify the problem, to understand the situation, and to bring the power of God into play. The disciples' question, 'Why couldn't we cast it out?' is a question from a warfare mindest, not a rationalistoc mindset. Starting with a proper mindset or worldview means we don't ask questions we cannot answer. And it motivates us and equips us to fight battles we can win. (Stef Liston: www.youtube.com/watch?v=zGxWCXaamX0
v21: Some work is harder than others; and nothing is to be achieved except by the power of Christ. This power is available to us;
- In witness Acts 1.8;
- In our lives, Eph 3.20;
- In the preaching of the gospel, 1 Cor 1.18;
- It is the power of God, Rom 1.16; 1 Cor 1.24.
Such incidents are essential is developing the disciples' faith, not to discourage, but to train.
v22-23: Jesus' further statement as to His intention. They are still in Galilee, beginning the journey to Jerusalem.
v24: The temple tax, Ex 30.11-16. Christ is, of course, not obliged to pay the tax, since He is greater than the temple. The so-called temple tax, originally a one-off payment had become an annual tax, collected prior to the Passover.
v25-26: Although the "sons" of the king are exempt from tax, to avoid offence, Jesus and Peter pay the tax.
Since the other eleven are not required to pay, this is an indication that they are below 20 years of age.
v27: Given the power of Christ, it is no surprise that the amount of money is exactly right, being sufficient for Jesus and for Peter.