JMNT(i)
2 And then, after six days, Jesus proceeds in taking along Peter, Jacob (James) and John, and continues leading (or: bringing) them up into a high mountain – privately [and] alone (= by themselves). And He was transformed in front of them
3 – even his garments became continuously glistening (radiantly shining as an effect of radiating very bright light), exceedingly white as snow, such as no person on earth who cards, cleans and bleaches woolen clothes is able to thus whiten –
4 and Elijah, together with Moses, was seen by them, and they continued being (were existentially existing) [there], continuing in conversation with Jesus.
5 Then, after considering, Peter proceeds in saying to Jesus, "Rabbi, it is a beautiful (ideal; fine) [situation for] us to continue being (or: existing) here! So we could (or: should) construct three tents (tabernacles): one for You, one for Moses, and one for Elijah."
6 You see, he had not perceived, so as to see, what considered judgment (or: decided response) he should make, for they became [other MSS: were being] so frightened (or: became terrified; became ones responding out of reverential fear).
7 And then a cloud formed, progressively overshadowing (casting shade upon) them. Next a voice sounded (came into existence; was birthed) from out of the midst of the cloud, saying, "This One is (ongoingly exists being) My Son, the Beloved One. Be habitually hearing, listening to [and thus, obeying] Him!"
8 Then suddenly, upon looking around, no longer did they see anyone, except Jesus, alone with themselves (or: they no longer saw even one person with themselves, except Jesus, only).
9 And then during their progressively descending (climbing down) from out of the mountain, He expressly gave a distinct explanation to them to the end that they should be relating (or: leading through the account of the incident) to no one what they saw – except whenever the Son of the Man (the Human Son; mankind's son) should arise (would stand back up again) from out of the midst of dead ones.
10 So they strongly held the word (= [Christ's] statement concerning not relating the matter) to themselves, continuing in discussing and questioning together as to what is the [meaning or significance of the words], "to stand back up again (or: arise again) from out of the midst of dead ones."
11 And so they began to inquire of Him, saying, "[How is it] that the scribes (= theologians of the Law; scholars) are continually saying that it is necessary for Elijah to come first?"
12 Now He affirmed to them, "Elijah indeed, coming first, progressively moves all humanity (or: all things) away from where they have been placed (or: put) down and from what has been firmly established. So how has it been written on (or: concerning) the Son of the Man (mankind's son; the Human Being; = the son of Adam; = the eschatological Messianic figure) that He should experience – and even suffer – many things and then be treated as nothing and with utter contempt and disregard?
13 "Nevertheless, I now say to you men that Elijah as well has come, so as to be here, and they do to Him (or: did with him) as many things as they were desiring and are still purposing – correspondingly as it has been written on Him (or: concerning him)."