The same place you go to verify Jesus: Human testimony. Many of the UFO observers are still alive; and, the same cannot be said of Jesus. Either you have faith in testimony, or you don't.
It is not worth the effort to dig all of that stuff out for you if you'll dismiss it out of hand. I really don't care if you believe in ETs or not, or whether you think they are demons or not. I couldn't convince you of this topic one way or the other. You will have to expose yourself to a considerable quantity of text with an open mind, and then decide for yourself if the phenonomem is real or imaginary.
It would be a mistake to imagine me to unintelligent or gullible. I am a computer science graduate from the "old school" when physics, math, and electronics were the working foundations. I'm pretty bright, but not socially well adjusted as is usually the case for bright people in this weird society. I am also a man of Faith. Once I read A LOT of this material, it was clear that the preponderance of evidence supports the notion of ETs and such.
It is also obvious that there is some spiritual aspect to the phenomenon. That is troublesome. Humans also tend to become so frightened during encounters that the are paralyzed, just like deer in the headlights.
There is a lot of reading material. Some of it indicates that the government has physical evidence in its possession. There are also incidents related to exposure of randomly selected citizens to ET artifacts in order to gage the reactions of the observer; and, the results tend to justify continued suppression of this knowledge.
It would be quite an effort for me to ferret out that information for you. I will seed your curiosity only if you are sincere about beginning your own research into the matter. I don't keep this material at hand; and, it would be quite a chore to recover it for you. Don't waste my time, I have too little of that.
If you think this would endanger your Faith, then don't pursue this. Like I said before, I had to integrate this into my Faith or suffer the loss of that Faith. The Bible amounts to a "Relationships with God for Dummies" book. God would have no more luck explaining the workings of Creation to you than you would have explaining the operation of the cellular telephone system to an emu.
Biblical faith, faith in divine testimony, is hardly the same as the stuff you are peddling. You are required to have faith in the testimony of fallible men for “things unseen.” Perhaps you don't see the difference.
It is also obvious that there is some spiritual aspect to the phenomenon.
Actually, it's not obvious. At least it is not any more obvious than the claims of Joseph Smith and the foundation of Mormonism. There's really nothing spiritual about it. It's just a fraud.
If you think this would endanger your Faith, then don't pursue this.
It's not a question of endangering my faith. It's more a question of it being a waste of time. What I've seen so far that all it is. Frankly, I don't wish to have a relationship with ET, even if it did exist. Humans are interesting enough.