Evidence, please.
People like Jim Semivan and John Ramirez have often spoken about this link and neither Semivan nor Ramirez has suggested a strictly Biblical angle to their occult/spiritual/paranormal suggestion. In fact, Ramirez has spoken in glowing terms of how these beings might be the very ones who are responsible for the technological development of mankind (i.e., they were the ones who rebelled against forces that wished to keep humans ignorant).
As an aside, it is interesting that Dr. Garry Nolan of Stanford, who has become something of a voice of this movement, is also an experiencer. He had beings in his bedroom as a child and saw a ufo when on his route as a paperboy. He has gone so far as to suggest that many of his scientific ideas have come from "downloads" (implying "aliens" are involved). He has become quite wealthy from his ideas and is a past nominee for a Nobel Prize in science/immunology.