The bride is the purified soul made ready within, and the Lamb is the higher nature that comes to be joined to it. Their marriage is the oil of the pituitary rising through the spine to meet and quicken the pineal point, the divine mind wedded to the still center in the head. This is the union the whole vision has been driving toward, now complete.
The angel who has finished pouring the 7 is simply the one who now turns and points to what all that climbing was for. New Jerusalem is no distant golden town but the awakened head itself, where the bride and the higher self are made one inside a living person.
Bride: the purified soul, cleansed and prepared, waiting within to be joined
Lamb: the higher divine nature that descends to wed the readied soul
Vials: the 7 energy centers of the spine, the full ladder the inner life climbs
New Jerusalem: the awakened head, the pineal city where the marriage is seen