In scripture, the devil is depicted as a serpent ever since the original sin of the first human couple. The characteristic forked tongue is a symbol of the perverse speech, lies and deceit associated with the fallen angels. The name Satan means "adversary" or "accuser". He accuses God's people of doing wrong. (Zechariah 3:1, Revelation 12:10).
One would think that the "unclean spirits," the angels who forsook their original dwelling place and brought about the great deluge or flood upon the earth long ago, are also serpents. Dwelling in the bowels of a metaphysical dungeon, experience dictates another similar analogy.
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