Ephrem the Syrian confirmed the demonic/archontic nature of Moses and Elijiah on Tabor:
But concerning Moses and Elijah who were found on the mountain in company with Isu, what do they (i.e. the Marcionites) say that they were doing in his presence ? But they say that they were guardians there. And what. pray, were they guarding, since there was nothing on the mountain ? And if there had been anything on it, the Maker would have had the Cherub and the point of the sword with which to surround the mountain.27 And if because Isu was a stranger to Him (i.e. to the Maker) they were guarding the mountain for Him, then, as between the mountain and the sanctuary, which of them was greater 28 to the Maker, that He should cease to guard His city and |lx His sanctuary and send them (i.e. Moses and Elijah) to guard a mountain in which there was nothing ? If He did not set forth [P.88.] some symbol there for us, let them tell us what such persons as Moses and Elijah were doing there. And if they say, 'You are asking us concerning your own (affairs) also,' then leave that (question) of ours as to what they were doing, and tell us (?) your own (opinion), namely on what account Isu went up thither. Was it in order to fight that he went up thither ? . . . did he make war against the Maker or . . . ? .
http://www.tertullian.org/fathers/ephra ... rcion1.htm
A word is basically important here for the original marcionite exegesis of the Transfiguration episode:
Can it be (that it was done) in order that He might shew them that what He gave was greater than what He received ? Then also Moses, etc., sold themselves to Him there, on account of that surpassing glory which they saw. And perhaps Isu too shewed them that glory on the mountain in order to incite Moses, etc., so that because Moses and Elijah were accustomed to that surpassing vision of the Maker Isu shewed them that (his glory) surpassed that of the Maker, in order that they might desire it eagerly on [P. 92.] account of its surpassing character. Well, then, in short, they made a bargain with him, because they had loved him.
The "glory" can mean, in Pauline terms, only a thing:
Crucifixion.
Hence no wonder about the rapid passage from the emphasis on the "
surpassing glory" to the emphasis on a cosmic "
fight":
And if thou sayest that neither for a sale nor for a bargain had Moses, etc., come to Him, then why had they come to Him ? Can it be that they had come to fight ? And very likely It is that men would come to fight against God ! And which of them is it who strikes (the blow), or which is it who is struck ? Or did he on this account take his Apostles with him and cause them to ascend (the mountain), in order that they might wage war with the Prophets ? And which of the sides conquered there or lost ? But that battle, what was it for ? Can it have been on account of the love of their Gods ? And why would not those Gods themselves contend for the love of mankind ? For if the Gods are at peace, why do they contend about mankind ? . . . [l. 39.] For if created things are from One, unadvisedly did Isu [1.42.] interpose, ... If they say that in truth the Stranger went up to heaven, see how much the Maker despised him and . . . [P.93.] against his disciples and against him [who said], 'This is my Son and my Beloved,' 33 [for] He had sent only two against them.
Ephrem the Syrian wonders why the demiurge would have sent
only Moses and Elijiah to combat Jesus and the three Pillars. The answer, I think, will be found
in nuce in the episode of the two crucified thieves. They are someway Moses and Elijiah insofar they want the crucifixion of Jesus, also.