The gathering happens one by one, never in a crowd. Each person is drawn out of the scattered outer world and brought home to the single power within. Israel is not a nation here but everyone who wakes to imagination as the source. That waking is a private event. No man is gathered as part of a mass; he is gathered alone, in his own awareness.
The threshing from river to stream is the sorting of what is kept from what is let go. A person collects the states worth living from and lets the rest fall away. No one else can do this quiet, personal work for him. The return to the one power is made one soul at a time, and each arrives on his own.