The body that we call Jesus was not in the beginning though it is eternal.
Jesus is SpiritSoulAndBody. -> His Spirit is the HolySpirit -> His soul is the mind and heart of His HolySpirit -> His body is the image of His HolySpirit.
So, the AncientOfDays that comes to execute judgment on the DayOfWrath is Christ Jesus.
At the close of the DayOfWrath Jesus will set foot on the Mount of Olives with His saints to celebrate in the MarriageSupper, setting up the MillennialKingdom in the ensuing days.