I don`t interpret the bible, because it is pointless to do so. I just wanted you to explain it so I can show you the flaws. It says we struggle not against flesh and blood... It can mean an infinite number of things... against morality, against human nature, against demons/devils/hell/satan, against evil, against the weather, against a chair, against a toothpick, to name a few. It is vague, and purposely so, it seems.
UFOs have nothing to do with the existence of ETs. The chances that UFOs have visited earth is even more remote than the chance that ETs exist, obviously. And if UFOs have visited earth, more concrete evidence that flashing lights would have showed up. Sure the conspiracy theorist would say there are alien bodies, then prove it, show them to us.
If they are here, and are deceiving us, as you say, why? What is the point? are we a zoo then? did god create the ETs as well? are they angels? sure there are theories and hypotheses (even though much of this i would loathe to call a theory or hypothesis), but there is no evidence, no science, and therefore no truth.