Christians, do you believe in your own eyes or what the bible says about pagans, witchcraft, alien life forms?

The reason for the things you mentioned are: (Revelation 12:7-9) And war broke out in heaven: Mi′cha·el and his angels battled with the dragon, and the dragon and its angels battled  but it did not prevail, neither was a place found for them any longer in heaven. 9So down the great dragon was hurled, the original serpent, the one called Devil and Satan, who is misleading the entire inhabited earth; he was hurled down to the earth, and his angels were hurled down with him.

(Revelation 12:12) On this account be glad, YOU heavens and YOU who reside in them! Woe for the earth and for the sea, because the Devil has come down to YOU, having great anger, knowing he has a short period of time.”

(2 Corinthians 11:14) Satan himself keeps transforming himself into an angel of light.

(1 John 5:19) We know we originate with God, but the whole world is lying in the [power of the] wicked one.

(2 Thessalonians 2:9) But the lawless one’s presence is according to the operation of Satan with every powerful work and lying signs and portents

(Ephesians 6:11-12) Put on the complete suit of armor from God that YOU may be able to stand firm against the machinations of the Devil; because we have a wrestling, not against blood and flesh, but against the world rulers of this darkness, against the wicked spirit forces in the heavenly places.

The Bible does give an explanation for those things. A lot of those things are merely demons. Some of them were also just mental troubles, illusions, hallucinations, and coincidences. An angel would never pretend to be a human ghost. Because when a human dies, they are no longer conscious (Ecclesiastes 9:5,10). So, if the angel were to say he was a ghost, he would be lying. Thus making himself a son of the devil, the father of the lie (John 8:44). And, if there were aliens, there would be no purpose to the Bible or why we are going through such pain. There is such a thing as a prophet. But Jehovah would give such a gift to someone with holy spirit.

Having a vision of 9/11 is not the same thing as predicting the end of the world. Clearly 9/11 was not the end of the world.

Furthermore, just because we're relatively sure these people are not liars does not prove they actually have powers. They simply honestly believe they do.

I don't recall the chapter on crop circles in the bible.

So do you think Bigfoot is God?