God has created a huge civilization in heaven, complete with many other beings. All sorts of Angels. among other things. But in the classic sense of “Aliens” from a different world and star system I don’t know for sure but I do know one thing. (This might be the big lie). Aliens are all Demonic.
In Genesis 6 it lays it all out. The fallen Angels disrobed from their spiritual bodies and began having sex with women and the women bear children to them. The children were hybrids, 1/2 Angel and 1/2 Human. These were giants for the most part and had supernatural power. Satan was trying to corrupt the gene pool so that the coming Messiah could not be born.
So God sent a worldwide flood to kill all of the hybrid children of angels and women. They called them Nephilim. The Nephilim are non redeemable by the Lord, because they are hybrids and not in God’s plan. So all of the Nephilim died in the flood and the spirits from the Nephilim do not go to heaven and must wander the earth in dry places. Disembodied Nephilim spirits are where all the demons came from that Jesus was casting out in the NT. They are the spirits of the condemned Nephilim. Without a body they are almost powerless, but when they possess a body then they have great strength. God punished the Nephilim so severely that they don’t want to take a chance going out of line with women in fear of being punished like some others were.
But it also says that the Nephilim was in the land and also after that…And in the book of Enoch it gives details about it. So there was many Nephilim spirits with no bodies, and we arent allowed to get with women anymore, so how shall we get bodies to possess? And (I surmise) that they made clone bodies on Alien ships. So we had many UFO sightings and, mutilated cattle. FYI, cattle blood is almost identical to human blood. The cow carcasses always have the blood drained and certain organ surgically removed. They are gathering genetic material to make bodies with that they can inhabit. Think of the history of Alien pictures. Long ago, it was pictures of the Greys. 1st edition bodies, not very good but they worked for their purpose. Then they learned more and new “species” of Aliens made the rounds, the Reptilians, the Nordics(?) tall white guys. They’re getting better it. But remember that they are Demonic spirits inhabiting all Aliens bodies. And if we have authority in Jesus name over the spirits, then we also have authority over them when they stand in an Alien body. Come to think of it, I never heard of a Christian being abducted by Aliens. Too big of a risk for them! Lol.
I heard a man’s testimony that he was in the woods somewhere and all of a sudden he seen a bigfoot. And when it saw him, it started towards him at a fast walk, and he got real scared and said, in the name of Jesus and right then it turned back again. So Bigfoot is probably a modern day Nephilim also.
That’s my take on it…
That said, the Lord gave us authority over all evil spirits in Jesus name.