The beast is a person acting out, the self run wild and out of control, and its capture is the moment that runaway nature is finally seized and held. The false prophet beside it is the deceiving faculty of the lower mind, the part that works apparent wonders and sells the mark and the image so a person keeps worshipping their own lower pattern. Both are cast alive into the lake of fire, which is stifled desire and passion and boredom set ablaze, the pent lower energy turned into burning that consumes what fed it. The fire is spirit, and thrown into it the beast and its prophet are not destroyed from outside but burned down inside the very heat of the desire they lived on.
The out-of-control self and the lie that justified it end together in the same flame. What kept a person captive is fed to the spirit-fire and burned away in the passion it once ruled.
Beast: a person acting out, the self gone wild and out of control
False prophet: the deceiving faculty of the lower mind that works wonders and sells the image
Lake of fire: stifled desire, passion, and boredom set ablaze, the pent lower energy turned to burning
Brimstone: the sulfur-heat of the spirit-fire, the burning-down of the lower pattern from within