Transfiguration of the Lord (Feast)
Shortly before this, Jesus was talking to His disciples about His suffering, so Jesus' transfiguration took place at this time can be delivering some important message to His disciples. On the mountain, while he was praying, His face changed in appearance and his clothing became dazzling white, and Moses and Elijah appeared beside Him. Moses and Elijah are two important figures in the Old Testament: one represents the Law, the other represents the Prophets. They're both very faithful servant of the Lord, and their presence confirmed what Jesus foretold His disciples: He is going to suffer, the Messianic prophecies in the Old Testament will be fulfilled by Him.
After seeing this, Peter said he would make three tents, one tent for each of them. As recorded, Peter did not know what he was saying, but he said it probably because he hoped this moment can last longer, that the three would stay with him for a bit longer. Notice how this suggestion is not appropriate: first, although Jesus revealed His glory to His disciples, it is not yet time for Him to enter into His glory, not until He has gone through His passion. That is why Moses and Elijah were talking with Jesus about what He'll accomplish in Jerusalem; all these are preparations for what is to come. Secondly, Peter's suggestion of making a tent for each of them implies all three of them have equal status, which is not true. Moses and Elijah are only prophets, whereas Jesus is the Son of God. Perhaps that is why our Father in Heaven immediately appeared to him in the clouds, saying, “This is my Son, my chosen one, listen to him.”
Jesus' transfiguration foreshadows His entrance into glory, and confirms His identity as the Son of God before the disciples. However, before His mission completes, he must first go through suffering and death, and His disciples would also face similar persecution.
God invites us to join Jesus in His entrance into glory; but before that, we must take up our cross and follow Him. Are you willing to do that?