While examining pre-existence in the Psalms of Solomon, which is most likely an ‘ideal pre-existence’, I came across a reference to the Son of Man in Enoch.
And there I saw One who had a head of days, And His head was white like wool, And with Him was another being whose countenance had the appearance of a man, And his face was full of graciousness, like one of the holy angels. And I asked the angel who went with me and showed me all the hidden things, concerning that Son of Man, who he was, and whence he was, (and) why he went with the Head of Days ? And he answered and said unto me: This is the Son of Man who hath righteousness, With whom dwelleth righteousness, And who revealeth all the treasures of that which is hidden, Because the Lord of Spirits hath chosen him, And whose lot hath the pre-eminence before the Lord of Spirits in uprightness for ever. And this Son of Man whom thou hast seen Shall raise up the kings and the mighty from their seats, ] And shall loosen the reins of the strong, And break the teeth of the sinners. He shall put down the kings from their thrones and kingdoms]] Because they do not extol and praise Him, Nor humbly acknowledge whence the kingdom was bestowed upon them. And he shall put down the countenance of the strong, And shall fill them with shame. And darkness shall be their dwelling, And worms shall be their bed, And they shall have no hope of rising from their beds, Because they do not extol the name of the Lord of Spirits. And these are they who judge the stars of heaven, ], And tread upon the earth and dwell upon it. And all their deeds manifest unrighteousness, And their power rests upon their riches, And their faith is in the gods which they have made with their hands, And they deny the name of the Lord of Spirits, And they persecute the houses of His congregations, And the faithful who hang upon the name of the Lord of Spirits. (1st Enoch 46:1-8 OTP)
Unlike the Messiah in the Pss Sol, the Messiah in Enoch has a physical pre-existence, residing in Heaven next to God, and waiting simply for God’s command. We should see come resemblance here to John’s Revelation (cf 1.14). The difference, as I see it, between the ideal pre-existence and the physical pre-existence, expressed by both communities, is that the former may be seen as something more than a vicar, but a personification of an attribute in some way while the latter is wholly God’s vicar on earth, and possibly a co-regent.