Mark 9:1-13
1And Jesus was saying to them, “Truly I say to you, there are some of those who are standing here who will not taste death until they see the kingdom of God when it has come with power.” 2 And six days later Jesus took with Him Peter, James, and John, and brought them up on a high mountain by themselves. And He was transfigured before them; 3 and His garments became radiant and exceedingly white, as no launderer on earth can whiten them. 4 And Elijah appeared to them along with Moses; and they were talking with Jesus. 5 Peter responded and *said to Jesus, “Rabbi, it is good that we are here; let’s make three tabernacles, one for You, one for Moses, and one for Elijah.” 6 For he did not know how to reply; for they became terrified. 7 Then a cloud formed, overshadowing them, and a voice came out of the cloud: “This is My beloved Son; listen to Him!”8 And suddenly they looked around and saw no one with them anymore, except Jesus alone.
9 As they were coming down from the mountain, He gave them orders not to relate to anyone what they had seen, until the Son of Man rose from the dead. 10 They seized upon that statement, discussing with one another what rising from the dead meant. 11 And they asked Him, saying, “Why is it that the scribes say that Elijah must come first?”12 And He said to them, “Elijah does come first and he restores all things. And yet how is it written of the Son of Man that He will suffer many things and be treated with contempt? 13 But I say to you that Elijah has indeed come, and they did to him whatever they wanted, just as it is written of him.”

Mark 9:1
1 And Jesus was saying to them, “Truly I say to you, there are some of those who are standing here who will not taste death until they see the kingdom of God when it has come with power.”

Mark 9:2
2 And six days later Jesus took with Him Peter, James, and John, and brought them up on a high mountain by themselves.

Mark 9:2-3
2 And six days later Jesus took with Him Peter, James, and John, and brought them up on a high mountain by themselves. And He was transfigured before them; 3 and His garments became radiant and exceedingly white, as no launderer on earth can whiten them.

Transfigured – metamorphoó - Metamorphosis

Hebrews 1:3
3 He is the radiance of the glory of God and the exact imprint of his nature, and he upholds the universe by the word of his power.

“For Christ to be glorious was almost a less matter than for him to restrain or hide his glory. It is forever his glory that he concealed his glory; and that, though he was rich, for our sakes he became poor.” — Spurgeon

II Peter 1:16-18
‘16 For we were not making up clever stories when we told you about the powerful coming of our Lord Jesus Christ. We saw his majestic splendor with our own eyes 17 when he received honor and glory from God the Father. The voice from the majestic glory of God said to him, “This is my dearly loved Son, who brings me great joy.” 18 We ourselves heard that voice from heaven when we were with him on the holy mountain.’

John 1:14
14 And the Word became flesh, and dwelt among us; and we saw His glory, glory as of the only Son from the Father, full of grace and truth.

Mark 9:4
4 And Elijah appeared to them along with Moses; and they were talking with Jesus.

Mark 9:5-6
5 Peter responded and said to Jesus, “Rabbi, it is good that we are here; let’s make three tabernacles, one for You, one for Moses, and one for Elijah.” 6 For he did not know how to reply; for they became terrified.

Mark 9:7-8
7 Then a cloud formed, overshadowing them, and a voice came out of the cloud: “This is My beloved Son; listen to Him!” 8 And suddenly they looked around and saw no one with them anymore, except Jesus alone.

Exodus 13:21
21 The LORD went ahead of them. He guided them during the day with a pillar of cloud, and he provided light at night with a pillar of fire. This allowed them to travel by day or by night.

Exodus 40:34-38
34 Then the cloud covered the Tabernacle, and the glory of the LORD filled the Tabernacle. 35 Moses could no longer enter the Tabernacle because the cloud had settled down over it, and the glory of the LORD filled the Tabernacle. 36 Now whenever the cloud lifted from the Tabernacle, the people of Israel would set out on their journey, following it. 37 But if the cloud did not rise, they remained where they were until it lifted. 38 The cloud of the LORD hovered over the Tabernacle during the day, and at night fire glowed inside the cloud so the whole family of Israel could see it. This continued throughout all their journeys.

Mark 9:9
9 As they were coming down from the mountain, He gave them orders not to relate to anyone what they had seen, until the Son of Man rose from the dead.

Mark 9:10-13
10 They seized upon that statement, discussing with one another what rising from the dead meant. 11 And they asked Him, saying, “Why is it that the scribes say that Elijah must come first?”12 And He said to them, “Elijah does come first and he restores all things. And yet how is it written of the Son of Man that He will suffer many things and be treated with contempt? 13 But I say to you that Elijah has indeed come, and they did to him whatever they wanted, just as it is written of him.”

Romans 12:2
2 Do not be conformed to this world, but be transformed by the renewal of your mind

II Cor 3:18
18 And we all, with unveiled face, beholding the glory of the Lord, are being transformed into the same image from one degree of glory to another. For this comes from the Lord who is the Spirit.